80997852312 has 128 divisors (see below), whose sum is σ = 247936550400. Its totient is φ = 24342788736.

The previous prime is 80997852241. The next prime is 80997852343. The reversal of 80997852312 is 21325879908.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214668 + ... + 456155.

It is an arithmetic number, because the mean of its divisors is an integer number (1937004300).

Almost surely, 2^80997852312 is an apocalyptic number.

It is an amenable number.

80997852312 is an abundant number, since it is smaller than the sum of its proper divisors (166938698088).

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

80997852312 is a wasteful number, since it uses less digits than its factorization.

80997852312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670894 (or 670884 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 80997852312 in words is "eighty billion, nine hundred ninety-seven million, eight hundred fifty-two thousand, three hundred twelve".