857137592990 has 64 divisors (see below), whose sum is σ = 1766046965760. Its totient is φ = 293410719360.

The previous prime is 857137592989. The next prime is 857137593019. The reversal of 857137592990 is 99295731758.

It is a happy number.

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, 213588224 + ... + 213592236.

It is an arithmetic number, because the mean of its divisors is an integer number (27594483840).

Almost surely, 2^857137592990 is an apocalyptic number.

857137592990 is an abundant number, since it is smaller than the sum of its proper divisors (908909372770).

857137592990 is a wasteful number, since it uses less digits than its factorization.

857137592990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8097.

The product of its (nonzero) digits is 42865200, while the sum is 65.

The spelling of 857137592990 in words is "eight hundred fifty-seven billion, one hundred thirty-seven million, five hundred ninety-two thousand, nine hundred ninety".