84711972582 has 80 divisors (see below), whose sum is σ = 197417050512. Its totient is φ = 27128364480.

The previous prime is 84711972581. The next prime is 84711972599. The reversal of 84711972582 is 28527911748.

84711972582 is a `hidden beast` number, since 8 + 47 + 1 + 19 + 7 + 2 + 582 = 666.

It is a super-2 number, since 2×84711972582² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84711972581) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 325248 + ... + 524604.

Almost surely, 2^84711972582 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84711972582, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98708525256).

84711972582 is an abundant number, since it is smaller than the sum of its proper divisors (112705077930).

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

84711972582 is a wasteful number, since it uses less digits than its factorization.

84711972582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199475 (or 199466 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 54.

The spelling of 84711972582 in words is "eighty-four billion, seven hundred eleven million, nine hundred seventy-two thousand, five hundred eighty-two".