15513531055 has 8 divisors (see below), whose sum is σ = 20308622544. Its totient is φ = 11282568000.

The previous prime is 15513530959. The next prime is 15513531091. The reversal of 15513531055 is 55013531551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15513531055 - 2²⁵ = 15479976623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15513531055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141032046 + ... + 141032155.

It is an arithmetic number, because the mean of its divisors is an integer number (2538577818).

Almost surely, 2^15513531055 is an apocalyptic number.

15513531055 is a deficient number, since it is larger than the sum of its proper divisors (4795091489).

15513531055 is a wasteful number, since it uses less digits than its factorization.

15513531055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282064217.

The product of its (nonzero) digits is 28125, while the sum is 34.

The spelling of 15513531055 in words is "fifteen billion, five hundred thirteen million, five hundred thirty-one thousand, fifty-five".