8611542972 has 48 divisors (see below), whose sum is σ = 22348166400. Its totient is φ = 2867693040.

The previous prime is 8611542959. The next prime is 8611542991. The reversal of 8611542972 is 2792451168.

8611542972 is a `hidden beast` number, since 8 + 6 + 11 + 542 + 97 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72679 + ... + 150017.

It is an arithmetic number, because the mean of its divisors is an integer number (465586800).

Almost surely, 2^8611542972 is an apocalyptic number.

It is an amenable number.

8611542972 is an abundant number, since it is smaller than the sum of its proper divisors (13736623428).

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

8611542972 is a wasteful number, since it uses less digits than its factorization.

8611542972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78383 (or 78375 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 8611542972 is about 92798.3996198210. The cubic root of 8611542972 is about 2049.7158417954.

The spelling of 8611542972 in words is "eight billion, six hundred eleven million, five hundred forty-two thousand, nine hundred seventy-two".