861862485204 has 36 divisors (see below), whose sum is σ = 2489824957984. Its totient is φ = 246246424272.

The previous prime is 861862485179. The next prime is 861862485217. The reversal of 861862485204 is 402584268168.

861862485204 is a `hidden beast` number, since 8 + 6 + 1 + 8 + 624 + 8 + 5 + 2 + 0 + 4 = 666.

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

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1710044362 + ... + 1710044865.

Almost surely, 2^861862485204 is an apocalyptic number.

861862485204 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

861862485204 is an abundant number, since it is smaller than the sum of its proper divisors (1627962472780).

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

861862485204 is a wasteful number, since it uses less digits than its factorization.

861862485204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3420089244 (or 3420089239 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 54.

The spelling of 861862485204 in words is "eight hundred sixty-one billion, eight hundred sixty-two million, four hundred eighty-five thousand, two hundred four".