82815912620 has 24 divisors (see below), whose sum is σ = 198758190624. Its totient is φ = 28394027136.

The previous prime is 82815912601. The next prime is 82815912629. The reversal of 82815912620 is 2621951828.

It is not an unprimeable number, because it can be changed into a prime (82815912629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295770977 + ... + 295771256.

It is an arithmetic number, because the mean of its divisors is an integer number (8281591276).

Almost surely, 2^82815912620 is an apocalyptic number.

It is an amenable number.

82815912620 is an abundant number, since it is smaller than the sum of its proper divisors (115942278004).

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

82815912620 is a wasteful number, since it uses less digits than its factorization.

82815912620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591542249 (or 591542247 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 82815912620 in words is "eighty-two billion, eight hundred fifteen million, nine hundred twelve thousand, six hundred twenty".