7716066455664 has 120 divisors (see below), whose sum is σ = 24719824496640. Its totient is φ = 2200958296704.

The previous prime is 7716066455663. The next prime is 7716066455701. The reversal of 7716066455664 is 4665546606177.

7716066455664 is a `hidden beast` number, since 7 + 7 + 1 + 6 + 0 + 6 + 64 + 5 + 566 + 4 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7716066455663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5693604 + ... + 6917315.

It is an arithmetic number, because the mean of its divisors is an integer number (205998537472).

Almost surely, 2^{7716066455664} is an apocalyptic number.

It is an amenable number.

7716066455664 is an abundant number, since it is smaller than the sum of its proper divisors (17003758040976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7716066455664 is a wasteful number, since it uses less digits than its factorization.

7716066455664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12611547 (or 12611538 counting only the distinct ones).

The product of its (nonzero) digits is 152409600, while the sum is 63.

The spelling of 7716066455664 in words is "seven trillion, seven hundred sixteen billion, sixty-six million, four hundred fifty-five thousand, six hundred sixty-four".