11839508945 has 16 divisors (see below), whose sum is σ = 15597724608. Its totient is φ = 8555701440.

The previous prime is 11839508909. The next prime is 11839508953. The reversal of 11839508945 is 54980593811.

It is a happy number.

It is not a de Polignac number, because 11839508945 - 2¹⁸ = 11839246801 is a prime.

It is a Duffinian number.

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, 676919 + ... + 694188.

It is an arithmetic number, because the mean of its divisors is an integer number (974857788).

Almost surely, 2^11839508945 is an apocalyptic number.

It is an amenable number.

11839508945 is a deficient number, since it is larger than the sum of its proper divisors (3758215663).

11839508945 is a wasteful number, since it uses less digits than its factorization.

11839508945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371280.

The product of its (nonzero) digits is 1555200, while the sum is 53.

The spelling of 11839508945 in words is "eleven billion, eight hundred thirty-nine million, five hundred eight thousand, nine hundred forty-five".