84977392671 has 12 divisors (see below), whose sum is σ = 124757338680. Its totient is φ = 55722880080.

The previous prime is 84977392637. The next prime is 84977392699. The reversal of 84977392671 is 17629377948.

84977392671 is a `hidden beast` number, since 8 + 497 + 73 + 9 + 2 + 6 + 71 = 666.

It is not a de Polignac number, because 84977392671 - 2⁶ = 84977392607 is a prime.

It is a super-2 number, since 2×84977392671² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 84977392599 and 84977392608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84977391671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77392341 + ... + 77393438.

It is an arithmetic number, because the mean of its divisors is an integer number (10396444890).

Almost surely, 2^84977392671 is an apocalyptic number.

84977392671 is a deficient number, since it is larger than the sum of its proper divisors (39779946009).

84977392671 is a wasteful number, since it uses less digits than its factorization.

84977392671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154785846 (or 154785843 counting only the distinct ones).

The product of its digits is 32006016, while the sum is 63.

The spelling of 84977392671 in words is "eighty-four billion, nine hundred seventy-seven million, three hundred ninety-two thousand, six hundred seventy-one".