15155542551 has 32 divisors (see below), whose sum is σ = 21543874560. Its totient is φ = 9443892224.

The previous prime is 15155542547. The next prime is 15155542613. The reversal of 15155542551 is 15524555151.

It is not a de Polignac number, because 15155542551 - 2² = 15155542547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15155542541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5262730 + ... + 5265608.

It is an arithmetic number, because the mean of its divisors is an integer number (673246080).

Almost surely, 2^15155542551 is an apocalyptic number.

15155542551 is a deficient number, since it is larger than the sum of its proper divisors (6388332009).

15155542551 is a wasteful number, since it uses less digits than its factorization.

15155542551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3575.

The product of its digits is 125000, while the sum is 39.

The spelling of 15155542551 in words is "fifteen billion, one hundred fifty-five million, five hundred forty-two thousand, five hundred fifty-one".