81933413496 has 64 divisors (see below), whose sum is σ = 223959496320. Its totient is φ = 24772225920.

The previous prime is 81933413479. The next prime is 81933413501. The reversal of 81933413496 is 69431433918.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233335 + ... + 467238.

It is an arithmetic number, because the mean of its divisors is an integer number (3499367130).

Almost surely, 2^81933413496 is an apocalyptic number.

It is an amenable number.

81933413496 is an abundant number, since it is smaller than the sum of its proper divisors (142026082824).

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

81933413496 is a wasteful number, since it uses less digits than its factorization.

81933413496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701036 (or 701032 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 51.

The spelling of 81933413496 in words is "eighty-one billion, nine hundred thirty-three million, four hundred thirteen thousand, four hundred ninety-six".