8051013972 has 36 divisors (see below), whose sum is σ = 20735163540. Its totient is φ = 2633035392.

The previous prime is 8051013941. The next prime is 8051013983. The reversal of 8051013972 is 2793101508.

8051013972 is a `hidden beast` number, since 8 + 0 + 510 + 139 + 7 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5866947216 + 2184066756 = 76596^2 + 46734^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2107897 + ... + 2111712.

It is an arithmetic number, because the mean of its divisors is an integer number (575976765).

Almost surely, 2^8051013972 is an apocalyptic number.

It is an amenable number.

8051013972 is an abundant number, since it is smaller than the sum of its proper divisors (12684149568).

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

8051013972 is a wasteful number, since it uses less digits than its factorization.

8051013972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4219672 (or 4219667 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 8051013972 is about 89727.4426917429. The cubic root of 8051013972 is about 2004.2421600108.

The spelling of 8051013972 in words is "eight billion, fifty-one million, thirteen thousand, nine hundred seventy-two".