864987195757 has 16 divisors (see below), whose sum is σ = 902779214400. Its totient is φ = 828126659200.

The previous prime is 864987195713. The next prime is 864987195889. The reversal of 864987195757 is 757591789468.

It is not a de Polignac number, because 864987195757 - 2¹⁵ = 864987162989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864987195557) 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, 345919 + ... + 1360012.

It is an arithmetic number, because the mean of its divisors is an integer number (56423700900).

Almost surely, 2^864987195757 is an apocalyptic number.

It is an amenable number.

864987195757 is a deficient number, since it is larger than the sum of its proper divisors (37792018643).

864987195757 is a wasteful number, since it uses less digits than its factorization.

864987195757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706204.

The product of its digits is 1066867200, while the sum is 76.

The spelling of 864987195757 in words is "eight hundred sixty-four billion, nine hundred eighty-seven million, one hundred ninety-five thousand, seven hundred fifty-seven".