80444893815 has 96 divisors (see below), whose sum is σ = 164521191744. Its totient is φ = 35848120320.

The previous prime is 80444893799. The next prime is 80444893883. The reversal of 80444893815 is 51839844408.

It is a happy number.

80444893815 is a `hidden beast` number, since 80 + 4 + 4 + 489 + 3 + 81 + 5 = 666.

It is not a de Polignac number, because 80444893815 - 2⁴ = 80444893799 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1472529 + ... + 1526181.

It is an arithmetic number, because the mean of its divisors is an integer number (1713762414).

Almost surely, 2^80444893815 is an apocalyptic number.

80444893815 is an abundant number, since it is smaller than the sum of its proper divisors (84076297929).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80444893815 is a wasteful number, since it uses less digits than its factorization.

80444893815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53921 (or 53918 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 54.

The spelling of 80444893815 in words is "eighty billion, four hundred forty-four million, eight hundred ninety-three thousand, eight hundred fifteen".