84991876956 has 36 divisors (see below), whose sum is σ = 245532089712. Its totient is φ = 24283393344.

The previous prime is 84991876943. The next prime is 84991876967. The reversal of 84991876956 is 65967819948.

84991876956 is a `hidden beast` number, since 8 + 499 + 1 + 87 + 6 + 9 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168634425 + ... + 168634928.

Almost surely, 2^84991876956 is an apocalyptic number.

It is an amenable number.

84991876956 is an abundant number, since it is smaller than the sum of its proper divisors (160540212756).

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

84991876956 is a wasteful number, since it uses less digits than its factorization.

84991876956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337269370 (or 337269365 counting only the distinct ones).

The product of its digits is 235146240, while the sum is 72.

The spelling of 84991876956 in words is "eighty-four billion, nine hundred ninety-one million, eight hundred seventy-six thousand, nine hundred fifty-six".