84985172756 has 24 divisors (see below), whose sum is σ = 163732910880. Its totient is φ = 38275221600.

The previous prime is 84985172749. The next prime is 84985172759. The reversal of 84985172756 is 65727158948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84985172759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8855210 + ... + 8864801.

It is an arithmetic number, because the mean of its divisors is an integer number (6822204620).

Almost surely, 2^84985172756 is an apocalyptic number.

It is an amenable number.

84985172756 is a deficient number, since it is larger than the sum of its proper divisors (78747738124).

84985172756 is a wasteful number, since it uses less digits than its factorization.

84985172756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17720135 (or 17720133 counting only the distinct ones).

The product of its digits is 33868800, while the sum is 62.

The spelling of 84985172756 in words is "eighty-four billion, nine hundred eighty-five million, one hundred seventy-two thousand, seven hundred fifty-six".