13151565550 has 48 divisors (see below), whose sum is σ = 25511617152. Its totient is φ = 5038387200.

The previous prime is 13151565547. The next prime is 13151565593. The reversal of 13151565550 is 5556515131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106614 + ... + 194086.

It is an arithmetic number, because the mean of its divisors is an integer number (531492024).

Almost surely, 2^13151565550 is an apocalyptic number.

13151565550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13151565550 is a deficient number, since it is larger than the sum of its proper divisors (12360051602).

13151565550 is a wasteful number, since it uses less digits than its factorization.

13151565550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87613 (or 87608 counting only the distinct ones).

The product of its (nonzero) digits is 56250, while the sum is 37.

The spelling of 13151565550 in words is "thirteen billion, one hundred fifty-one million, five hundred sixty-five thousand, five hundred fifty".