80925660686 has 32 divisors (see below), whose sum is σ = 132009921120. Its totient is φ = 36983931264.

The previous prime is 80925660637. The next prime is 80925660689. The reversal of 80925660686 is 68606652908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80925660689) 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, 4874696 + ... + 4891268.

It is an arithmetic number, because the mean of its divisors is an integer number (4125310035).

Almost surely, 2^80925660686 is an apocalyptic number.

80925660686 is a deficient number, since it is larger than the sum of its proper divisors (51084260434).

80925660686 is a wasteful number, since it uses less digits than its factorization.

80925660686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18420.

The product of its (nonzero) digits is 7464960, while the sum is 56.

The spelling of 80925660686 in words is "eighty billion, nine hundred twenty-five million, six hundred sixty thousand, six hundred eighty-six".