865749628344 has 32 divisors (see below), whose sum is σ = 2205211320720. Its totient is φ = 283138242816.

The previous prime is 865749628307. The next prime is 865749628349. The reversal of 865749628344 is 443826947568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865749628349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340309117 + ... + 340311660.

Almost surely, 2^865749628344 is an apocalyptic number.

It is an amenable number.

865749628344 is an abundant number, since it is smaller than the sum of its proper divisors (1339461692376).

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

865749628344 is a wasteful number, since it uses less digits than its factorization.

865749628344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680620839 (or 680620835 counting only the distinct ones).

The product of its digits is 278691840, while the sum is 66.

The spelling of 865749628344 in words is "eight hundred sixty-five billion, seven hundred forty-nine million, six hundred twenty-eight thousand, three hundred forty-four".