857864428580 has 48 divisors (see below), whose sum is σ = 1881730206720. Its totient is φ = 328096503168.

The previous prime is 857864428571. The next prime is 857864428583. The reversal of 857864428580 is 85824468758.

857864428580 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (857864428583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7120244 + ... + 7239723.

It is an arithmetic number, because the mean of its divisors is an integer number (39202712640).

Almost surely, 2^857864428580 is an apocalyptic number.

It is an amenable number.

857864428580 is an abundant number, since it is smaller than the sum of its proper divisors (1023865778140).

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

857864428580 is a wasteful number, since it uses less digits than its factorization.

857864428580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14360108 (or 14360106 counting only the distinct ones).

The product of its (nonzero) digits is 137625600, while the sum is 65.

The spelling of 857864428580 in words is "eight hundred fifty-seven billion, eight hundred sixty-four million, four hundred twenty-eight thousand, five hundred eighty".