15115661050 has 48 divisors (see below), whose sum is σ = 32571790272. Its totient is φ = 5111510400.

The previous prime is 15115661047. The next prime is 15115661051. The reversal of 15115661050 is 5016651151.

It is not an unprimeable number, because it can be changed into a prime (15115661051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 270256 + ... + 321355.

It is an arithmetic number, because the mean of its divisors is an integer number (678578964).

Almost surely, 2^15115661050 is an apocalyptic number.

15115661050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15115661050 is an abundant number, since it is smaller than the sum of its proper divisors (17456129222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15115661050 is a wasteful number, since it uses less digits than its factorization.

15115661050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591703 (or 591698 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 15115661050 in words is "fifteen billion, one hundred fifteen million, six hundred sixty-one thousand, fifty".