15135554331 has 12 divisors (see below), whose sum is σ = 21892060840. Its totient is φ = 10076711040.

The previous prime is 15135554327. The next prime is 15135554351. The reversal of 15135554331 is 13345553151.

15135554331 is a `hidden beast` number, since 1 + 51 + 35 + 5 + 543 + 31 = 666.

15135554331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15135554331 - 2² = 15135554327 is a prime.

It is a super-2 number, since 2×15135554331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15135554351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1131190 + ... + 1144491.

Almost surely, 2^15135554331 is an apocalyptic number.

15135554331 is a deficient number, since it is larger than the sum of its proper divisors (6756506509).

15135554331 is a wasteful number, since it uses less digits than its factorization.

15135554331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276426 (or 2276423 counting only the distinct ones).

The product of its digits is 67500, while the sum is 36.

The spelling of 15135554331 in words is "fifteen billion, one hundred thirty-five million, five hundred fifty-four thousand, three hundred thirty-one".