76640116987 has 16 divisors (see below), whose sum is σ = 88071634944. Its totient is φ = 65329524000.

The previous prime is 76640116921. The next prime is 76640116999. The reversal of 76640116987 is 78961104667.

It is a cyclic number.

It is not a de Polignac number, because 76640116987 - 2¹⁵ = 76640084219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76640119987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7456662 + ... + 7466932.

It is an arithmetic number, because the mean of its divisors is an integer number (5504477184).

Almost surely, 2^76640116987 is an apocalyptic number.

76640116987 is a deficient number, since it is larger than the sum of its proper divisors (11431517957).

76640116987 is a wasteful number, since it uses less digits than its factorization.

76640116987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16050.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 76640116987 in words is "seventy-six billion, six hundred forty million, one hundred sixteen thousand, nine hundred eighty-seven".