82643201616 has 20 divisors (see below), whose sum is σ = 213494937632. Its totient is φ = 27547733856.

The previous prime is 82643201579. The next prime is 82643201647. The reversal of 82643201616 is 61610234628.

It is a super-3 number, since 3×82643201616³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

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, 860866636 + ... + 860866731.

Almost surely, 2^82643201616 is an apocalyptic number.

It is an amenable number.

82643201616 is an abundant number, since it is smaller than the sum of its proper divisors (130851736016).

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

82643201616 is a wasteful number, since it uses less digits than its factorization.

82643201616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721733378 (or 1721733372 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 82643201616 in words is "eighty-two billion, six hundred forty-three million, two hundred one thousand, six hundred sixteen".