15255115557 has 16 divisors (see below), whose sum is σ = 22607926848. Its totient is φ = 9071079680.

The previous prime is 15255115517. The next prime is 15255115571. The reversal of 15255115557 is 75551155251.

15255115557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 15255115557 - 2¹² = 15255111461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15255115517) 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 15 ways as a sum of consecutive naturals, for example, 4359348 + ... + 4362845.

It is an arithmetic number, because the mean of its divisors is an integer number (1412995428).

Almost surely, 2^15255115557 is an apocalyptic number.

It is an amenable number.

15255115557 is a deficient number, since it is larger than the sum of its proper divisors (7352811291).

15255115557 is a wasteful number, since it uses less digits than its factorization.

15255115557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8722260.

The product of its digits is 218750, while the sum is 42.

The spelling of 15255115557 in words is "fifteen billion, two hundred fifty-five million, one hundred fifteen thousand, five hundred fifty-seven".