865387948723 has 4 divisors (see below), whose sum is σ = 888776812240. Its totient is φ = 841999085208.

The previous prime is 865387948693. The next prime is 865387948729. The reversal of 865387948723 is 327849783568.

865387948723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 865387948723 - 2²⁵ = 865354394291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (865387948729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11694431703 + ... + 11694431776.

It is an arithmetic number, because the mean of its divisors is an integer number (222194203060).

Almost surely, 2^865387948723 is an apocalyptic number.

865387948723 is a deficient number, since it is larger than the sum of its proper divisors (23388863517).

865387948723 is a wasteful number, since it uses less digits than its factorization.

865387948723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23388863516.

The product of its digits is 487710720, while the sum is 70.

The spelling of 865387948723 in words is "eight hundred sixty-five billion, three hundred eighty-seven million, nine hundred forty-eight thousand, seven hundred twenty-three".