83987834672 has 20 divisors (see below), whose sum is σ = 185973062736. Its totient is φ = 35994786240.

The previous prime is 83987834663. The next prime is 83987834681. The reversal of 83987834672 is 27643878938.

It is an interprime number because it is at equal distance from previous prime (83987834663) and next prime (83987834681).

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 83987834599 and 83987834608.

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, 374945579 + ... + 374945802.

Almost surely, 2^83987834672 is an apocalyptic number.

It is an amenable number.

83987834672 is an abundant number, since it is smaller than the sum of its proper divisors (101985228064).

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

83987834672 is a wasteful number, since it uses less digits than its factorization.

83987834672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749891396 (or 749891390 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 65.

The spelling of 83987834672 in words is "eighty-three billion, nine hundred eighty-seven million, eight hundred thirty-four thousand, six hundred seventy-two".