11712989904 has 160 divisors (see below), whose sum is σ = 38942269440. Its totient is φ = 2944166400.

The previous prime is 11712989891. The next prime is 11712989923. The reversal of 11712989904 is 40998921711.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63462 + ... + 165690.

It is an arithmetic number, because the mean of its divisors is an integer number (243389184).

Almost surely, 2^11712989904 is an apocalyptic number.

11712989904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11712989904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19471134720).

11712989904 is an abundant number, since it is smaller than the sum of its proper divisors (27229279536).

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

11712989904 is a wasteful number, since it uses less digits than its factorization.

11712989904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102289 (or 102283 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 51.

The spelling of 11712989904 in words is "eleven billion, seven hundred twelve million, nine hundred eighty-nine thousand, nine hundred four".