80421079690 has 32 divisors (see below), whose sum is σ = 165473155584. Its totient is φ = 27567024000.

The previous prime is 80421079679. The next prime is 80421079751. The reversal of 80421079690 is 9697012408.

It is a super-2 number, since 2×80421079690² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80421079690.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211662 + ... + 453478.

It is an arithmetic number, because the mean of its divisors is an integer number (5171036112).

Almost surely, 2^80421079690 is an apocalyptic number.

80421079690 is an abundant number, since it is smaller than the sum of its proper divisors (85052075894).

80421079690 is a wasteful number, since it uses less digits than its factorization.

80421079690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246582.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 80421079690 in words is "eighty billion, four hundred twenty-one million, seventy-nine thousand, six hundred ninety".