82837815440 has 40 divisors (see below), whose sum is σ = 193606322688. Its totient is φ = 32961637760.

The previous prime is 82837815421. The next prime is 82837815451. The reversal of 82837815440 is 4451873828.

It is a tau number, because it is divible by the number of its divisors (40).

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, 2695382 + ... + 2725941.

Almost surely, 2^82837815440 is an apocalyptic number.

82837815440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

82837815440 is an abundant number, since it is smaller than the sum of its proper divisors (110768507248).

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

82837815440 is a wasteful number, since it uses less digits than its factorization.

82837815440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5421527 (or 5421521 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 50.

The spelling of 82837815440 in words is "eighty-two billion, eight hundred thirty-seven million, eight hundred fifteen thousand, four hundred forty".