865929995940 has 96 divisors (see below), whose sum is σ = 2431343101824. Its totient is φ = 230273489920.

The previous prime is 865929995893. The next prime is 865929995941. The reversal of 865929995940 is 49599929568.

865929995940 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 (865929995941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48213442 + ... + 48231398.

It is an arithmetic number, because the mean of its divisors is an integer number (25326490644).

Almost surely, 2^865929995940 is an apocalyptic number.

It is an amenable number.

865929995940 is an abundant number, since it is smaller than the sum of its proper divisors (1565413105884).

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

865929995940 is a wasteful number, since it uses less digits than its factorization.

865929995940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20157 (or 20155 counting only the distinct ones).

The product of its (nonzero) digits is 566870400, while the sum is 75.

The spelling of 865929995940 in words is "eight hundred sixty-five billion, nine hundred twenty-nine million, nine hundred ninety-five thousand, nine hundred forty".