861707769324 has 24 divisors (see below), whose sum is σ = 2098071091200. Its totient is φ = 274747404624.

The previous prime is 861707769259. The next prime is 861707769331. The reversal of 861707769324 is 423967707168.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1561064524 + ... + 1561065075.

It is an arithmetic number, because the mean of its divisors is an integer number (87419628800).

Almost surely, 2^861707769324 is an apocalyptic number.

It is an amenable number.

861707769324 is an abundant number, since it is smaller than the sum of its proper divisors (1236363321876).

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

861707769324 is a wasteful number, since it uses less digits than its factorization.

861707769324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3122129629 (or 3122129627 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 60.

The spelling of 861707769324 in words is "eight hundred sixty-one billion, seven hundred seven million, seven hundred sixty-nine thousand, three hundred twenty-four".