857359256902 has 16 divisors (see below), whose sum is σ = 1291960970352. Its totient is φ = 426706351200.

The previous prime is 857359256839. The next prime is 857359256921. The reversal of 857359256902 is 209652953758.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2130748 + ... + 2500960.

It is an arithmetic number, because the mean of its divisors is an integer number (80747560647).

Almost surely, 2^857359256902 is an apocalyptic number.

857359256902 is a deficient number, since it is larger than the sum of its proper divisors (434601713450).

857359256902 is a wasteful number, since it uses less digits than its factorization.

857359256902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375543.

The product of its (nonzero) digits is 40824000, while the sum is 61.

The spelling of 857359256902 in words is "eight hundred fifty-seven billion, three hundred fifty-nine million, two hundred fifty-six thousand, nine hundred two".