11949261904 has 40 divisors (see below), whose sum is σ = 23440285440. Its totient is φ = 5900515200.

The previous prime is 11949261881. The next prime is 11949261923. The reversal of 11949261904 is 40916294911.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531369 + ... + 553399.

It is an arithmetic number, because the mean of its divisors is an integer number (586007136).

Almost surely, 2^11949261904 is an apocalyptic number.

It is an amenable number.

11949261904 is a deficient number, since it is larger than the sum of its proper divisors (11491023536).

11949261904 is a wasteful number, since it uses less digits than its factorization.

11949261904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22459 (or 22453 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 11949261904 in words is "eleven billion, nine hundred forty-nine million, two hundred sixty-one thousand, nine hundred four".