82761585644 has 12 divisors (see below), whose sum is σ = 148747174464. Its totient is φ = 40262392944.

The previous prime is 82761585617. The next prime is 82761585659. The reversal of 82761585644 is 44658516728.

It is a self number, because there is not a number n which added to its sum of digits gives 82761585644.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279599804 + ... + 279600099.

It is an arithmetic number, because the mean of its divisors is an integer number (12395597872).

Almost surely, 2^82761585644 is an apocalyptic number.

It is an amenable number.

82761585644 is a deficient number, since it is larger than the sum of its proper divisors (65985588820).

82761585644 is a wasteful number, since it uses less digits than its factorization.

82761585644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559199944 (or 559199942 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 56.

The spelling of 82761585644 in words is "eighty-two billion, seven hundred sixty-one million, five hundred eighty-five thousand, six hundred forty-four".