80729423063865 has 64 divisors (see below), whose sum is σ = 143713429632000. Its totient is φ = 42997370169600.

The previous prime is 80729423063831. The next prime is 80729423063903. The reversal of 80729423063865 is 56836032492708.

It is a happy number.

80729423063865 is a `hidden beast` number, since 8 + 0 + 7 + 294 + 2 + 306 + 38 + 6 + 5 = 666.

It is not a de Polignac number, because 80729423063865 - 2¹¹ = 80729423061817 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 880981600 + ... + 881073230.

It is an arithmetic number, because the mean of its divisors is an integer number (2245522338000).

Almost surely, 2^{80729423063865} is an apocalyptic number.

It is an amenable number.

80729423063865 is a deficient number, since it is larger than the sum of its proper divisors (62984006568135).

80729423063865 is a wasteful number, since it uses less digits than its factorization.

80729423063865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100415 (or 100409 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 63.

The spelling of 80729423063865 in words is "eighty trillion, seven hundred twenty-nine billion, four hundred twenty-three million, sixty-three thousand, eight hundred sixty-five".