80961568870 has 128 divisors (see below), whose sum is σ = 185544576000. Its totient is φ = 24749701632.

The previous prime is 80961568811. The next prime is 80961568937. The reversal of 80961568870 is 7886516908.

It is a congruent number.

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, 4671481 + ... + 4688779.

It is an arithmetic number, because the mean of its divisors is an integer number (1449567000).

Almost surely, 2^80961568870 is an apocalyptic number.

80961568870 is an abundant number, since it is smaller than the sum of its proper divisors (104583007130).

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

80961568870 is a wasteful number, since it uses less digits than its factorization.

80961568870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17502.

The product of its (nonzero) digits is 5806080, while the sum is 58.

The spelling of 80961568870 in words is "eighty billion, nine hundred sixty-one million, five hundred sixty-eight thousand, eight hundred seventy".