80297305956 has 144 divisors (see below), whose sum is σ = 239621910528. Its totient is φ = 22186353600.

The previous prime is 80297305919. The next prime is 80297305973. The reversal of 80297305956 is 65950379208.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15082311 + ... + 15087633.

Almost surely, 2^80297305956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80297305956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119810955264).

80297305956 is an abundant number, since it is smaller than the sum of its proper divisors (159324604572).

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

80297305956 is a wasteful number, since it uses less digits than its factorization.

80297305956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7302 (or 7297 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 54.

The spelling of 80297305956 in words is "eighty billion, two hundred ninety-seven million, three hundred five thousand, nine hundred fifty-six".