861071285232 has 120 divisors (see below), whose sum is σ = 2618462645760. Its totient is φ = 263145697920.

The previous prime is 861071285227. The next prime is 861071285233. The reversal of 861071285232 is 232582170168.

861071285232 is a `hidden beast` number, since 8 + 6 + 107 + 12 + 8 + 523 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861071285233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4991298 + ... + 5160929.

It is an arithmetic number, because the mean of its divisors is an integer number (21820522048).

Almost surely, 2^861071285232 is an apocalyptic number.

It is an amenable number.

861071285232 is an abundant number, since it is smaller than the sum of its proper divisors (1757391360528).

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

861071285232 is a wasteful number, since it uses less digits than its factorization.

861071285232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10152291 (or 10152282 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 861071285232 in words is "eight hundred sixty-one billion, seventy-one million, two hundred eighty-five thousand, two hundred thirty-two".