80937697920 has 128 divisors (see below), whose sum is σ = 258556242240. Its totient is φ = 21535924224.

The previous prime is 80937697909. The next prime is 80937697933. The reversal of 80937697920 is 2979673908.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 831319 + ... + 923561.

Almost surely, 2^80937697920 is an apocalyptic number.

80937697920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80937697920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129278121120).

80937697920 is an abundant number, since it is smaller than the sum of its proper divisors (177618544320).

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

80937697920 is a wasteful number, since it uses less digits than its factorization.

80937697920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92722 (or 92710 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 60.

The spelling of 80937697920 in words is "eighty billion, nine hundred thirty-seven million, six hundred ninety-seven thousand, nine hundred twenty".