82420823980 has 48 divisors (see below), whose sum is σ = 188877378816. Its totient is φ = 29961881280.

The previous prime is 82420823887. The next prime is 82420823981. The reversal of 82420823980 is 8932802428.

It is a happy number.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 82420823980.

It is not an unprimeable number, because it can be changed into a prime (82420823981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 670897 + ... + 784183.

It is an arithmetic number, because the mean of its divisors is an integer number (3934945392).

Almost surely, 2^82420823980 is an apocalyptic number.

It is an amenable number.

82420823980 is an abundant number, since it is smaller than the sum of its proper divisors (106456554836).

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

82420823980 is a wasteful number, since it uses less digits than its factorization.

82420823980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116614 (or 116612 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 82420823980 in words is "eighty-two billion, four hundred twenty million, eight hundred twenty-three thousand, nine hundred eighty".