80918938657995 has 64 divisors (see below), whose sum is σ = 134893583798400. Its totient is φ = 41390435778560.

The previous prime is 80918938657967. The next prime is 80918938658053. The reversal of 80918938657995 is 59975683981908.

It is not a de Polignac number, because 80918938657995 - 2¹² = 80918938653899 is a prime.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 5196391 + ... + 13741919.

It is an arithmetic number, because the mean of its divisors is an integer number (2107712246850).

Almost surely, 2^{80918938657995} is an apocalyptic number.

80918938657995 is a deficient number, since it is larger than the sum of its proper divisors (53974645140405).

80918938657995 is a wasteful number, since it uses less digits than its factorization.

80918938657995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8545840.

The product of its (nonzero) digits is 10581580800, while the sum is 87.

The spelling of 80918938657995 in words is "eighty trillion, nine hundred eighteen billion, nine hundred thirty-eight million, six hundred fifty-seven thousand, nine hundred ninety-five".