82561604310 has 48 divisors (see below), whose sum is σ = 223993227744. Its totient is φ = 21059191296.

The previous prime is 82561604309. The next prime is 82561604339. The reversal of 82561604310 is 1340616528.

It is a happy number.

82561604310 is a `hidden beast` number, since 8 + 2 + 5 + 616 + 0 + 4 + 31 + 0 = 666.

It is a super-2 number, since 2×82561604310² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19940347 + ... + 19944486.

It is an arithmetic number, because the mean of its divisors is an integer number (4666525578).

Almost surely, 2^82561604310 is an apocalyptic number.

82561604310 is an abundant number, since it is smaller than the sum of its proper divisors (141431623434).

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

82561604310 is a wasteful number, since it uses less digits than its factorization.

82561604310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39884869 (or 39884866 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 82561604310 in words is "eighty-two billion, five hundred sixty-one million, six hundred four thousand, three hundred ten".