82621134904 has 32 divisors (see below), whose sum is σ = 193140316800. Its totient is φ = 32190052320.

The previous prime is 82621134887. The next prime is 82621134977. The reversal of 82621134904 is 40943112628.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67061994 + ... + 67063225.

It is an arithmetic number, because the mean of its divisors is an integer number (6035634900).

Almost surely, 2^82621134904 is an apocalyptic number.

It is an amenable number.

82621134904 is an abundant number, since it is smaller than the sum of its proper divisors (110519181896).

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

82621134904 is a wasteful number, since it uses less digits than its factorization.

82621134904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134125243 (or 134125239 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 82621134904 in words is "eighty-two billion, six hundred twenty-one million, one hundred thirty-four thousand, nine hundred four".