83645673412 has 24 divisors (see below), whose sum is σ = 171812736704. Its totient is φ = 34879276512.

The previous prime is 83645673379. The next prime is 83645673479. The reversal of 83645673412 is 21437654638.

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, 40368498 + ... + 40370569.

Almost surely, 2^83645673412 is an apocalyptic number.

It is an amenable number.

83645673412 is an abundant number, since it is smaller than the sum of its proper divisors (88167063292).

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

83645673412 is a wasteful number, since it uses less digits than its factorization.

83645673412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80739115 (or 80739113 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 49.

The spelling of 83645673412 in words is "eighty-three billion, six hundred forty-five million, six hundred seventy-three thousand, four hundred twelve".