999137288712 has 64 divisors (see below), whose sum is σ = 2504300198400. Its totient is φ = 332185955840.

The previous prime is 999137288701. The next prime is 999137288771. The reversal of 999137288712 is 217882731999.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14522089 + ... + 14590727.

It is an arithmetic number, because the mean of its divisors is an integer number (39129690600).

Almost surely, 2^999137288712 is an apocalyptic number.

It is an amenable number.

999137288712 is an abundant number, since it is smaller than the sum of its proper divisors (1505162909688).

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

999137288712 is a wasteful number, since it uses less digits than its factorization.

999137288712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70206 (or 70202 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 66.

The spelling of 999137288712 in words is "nine hundred ninety-nine billion, one hundred thirty-seven million, two hundred eighty-eight thousand, seven hundred twelve".