11537161551 has 12 divisors (see below), whose sum is σ = 17541883320. Its totient is φ = 7286628240.

The previous prime is 11537161511. The next prime is 11537161561. The reversal of 11537161551 is 15516173511.

11537161551 is a `hidden beast` number, since 1 + 1 + 5 + 37 + 1 + 615 + 5 + 1 = 666.

It is not a de Polignac number, because 11537161551 - 2¹³ = 11537153359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11537161511) 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, 33734220 + ... + 33734561.

It is an arithmetic number, because the mean of its divisors is an integer number (1461823610).

Almost surely, 2^11537161551 is an apocalyptic number.

11537161551 is a deficient number, since it is larger than the sum of its proper divisors (6004721769).

11537161551 is a wasteful number, since it uses less digits than its factorization.

11537161551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67468806 (or 67468803 counting only the distinct ones).

The product of its digits is 15750, while the sum is 36.

The spelling of 11537161551 in words is "eleven billion, five hundred thirty-seven million, one hundred sixty-one thousand, five hundred fifty-one".