66122507767 has 8 divisors (see below), whose sum is σ = 67150517616. Its totient is φ = 65095707072.

The previous prime is 66122507741. The next prime is 66122507779. The reversal of 66122507767 is 76770522166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66122507767 - 2³¹ = 63975024119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66122507767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66122507797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191758 + ... + 411115.

It is an arithmetic number, because the mean of its divisors is an integer number (8393814702).

Almost surely, 2^66122507767 is an apocalyptic number.

66122507767 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

66122507767 is a deficient number, since it is larger than the sum of its proper divisors (1028009849).

66122507767 is a wasteful number, since it uses less digits than its factorization.

66122507767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604577.

The product of its (nonzero) digits is 1481760, while the sum is 49.

The spelling of 66122507767 in words is "sixty-six billion, one hundred twenty-two million, five hundred seven thousand, seven hundred sixty-seven".