80998992970 has 64 divisors (see below), whose sum is σ = 169254199296. Its totient is φ = 27336375360.

The previous prime is 80998992959. The next prime is 80998993007. The reversal of 80998992970 is 7929989908.

It is a Harshad number since it is a multiple of its sum of digits (70).

It is a self number, because there is not a number n which added to its sum of digits gives 80998992970.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1170435 + ... + 1237705.

It is an arithmetic number, because the mean of its divisors is an integer number (2644596864).

Almost surely, 2^80998992970 is an apocalyptic number.

80998992970 is an abundant number, since it is smaller than the sum of its proper divisors (88255206326).

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

80998992970 is a wasteful number, since it uses less digits than its factorization.

80998992970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67555.

The product of its (nonzero) digits is 52907904, while the sum is 70.

The spelling of 80998992970 in words is "eighty billion, nine hundred ninety-eight million, nine hundred ninety-two thousand, nine hundred seventy".