11720135904 has 48 divisors (see below), whose sum is σ = 30793181328. Its totient is φ = 3903178752.

The previous prime is 11720135899. The next prime is 11720135923. The reversal of 11720135904 is 40953102711.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52584 + ... + 161880.

It is an arithmetic number, because the mean of its divisors is an integer number (641524611).

Almost surely, 2^11720135904 is an apocalyptic number.

It is an amenable number.

11720135904 is an abundant number, since it is smaller than the sum of its proper divisors (19073045424).

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

11720135904 is a wasteful number, since it uses less digits than its factorization.

11720135904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110427 (or 110419 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The spelling of 11720135904 in words is "eleven billion, seven hundred twenty million, one hundred thirty-five thousand, nine hundred four".