11931747834 has 32 divisors (see below), whose sum is σ = 24376826880. Its totient is φ = 3892590512.

The previous prime is 11931747787. The next prime is 11931747847. The reversal of 11931747834 is 43874713911.

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, 58674 + ... + 165245.

It is an arithmetic number, because the mean of its divisors is an integer number (761775840).

Almost surely, 2^11931747834 is an apocalyptic number.

11931747834 is an abundant number, since it is smaller than the sum of its proper divisors (12445079046).

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

11931747834 is a wasteful number, since it uses less digits than its factorization.

11931747834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224114.

The product of its digits is 508032, while the sum is 48.

The spelling of 11931747834 in words is "eleven billion, nine hundred thirty-one million, seven hundred forty-seven thousand, eight hundred thirty-four".