11954816604 has 36 divisors (see below), whose sum is σ = 30530665984. Its totient is φ = 3943855872.

The previous prime is 11954816591. The next prime is 11954816609. The reversal of 11954816604 is 40661845911.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 11954816604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11954816609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1708252 + ... + 1715235.

Almost surely, 2^11954816604 is an apocalyptic number.

It is an amenable number.

11954816604 is an abundant number, since it is smaller than the sum of its proper divisors (18575849380).

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

11954816604 is a wasteful number, since it uses less digits than its factorization.

11954816604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423594 (or 3423589 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 11954816604 in words is "eleven billion, nine hundred fifty-four million, eight hundred sixteen thousand, six hundred four".