863258863870 has 64 divisors (see below), whose sum is σ = 1731476113920. Its totient is φ = 307683307008.

The previous prime is 863258863861. The next prime is 863258863891. The reversal of 863258863870 is 78368852368.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19155484 + ... + 19200496.

It is an arithmetic number, because the mean of its divisors is an integer number (27054314280).

Almost surely, 2^863258863870 is an apocalyptic number.

863258863870 is an abundant number, since it is smaller than the sum of its proper divisors (868217250050).

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

863258863870 is a wasteful number, since it uses less digits than its factorization.

863258863870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50149.

The product of its (nonzero) digits is 92897280, while the sum is 64.

The spelling of 863258863870 in words is "eight hundred sixty-three billion, two hundred fifty-eight million, eight hundred sixty-three thousand, eight hundred seventy".