15115661054 has 8 divisors (see below), whose sum is σ = 24417606360. Its totient is φ = 6976458936.

The previous prime is 15115661053. The next prime is 15115661063. The reversal of 15115661054 is 45016651151.

It is a happy number.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 290685764 + ... + 290685815.

It is an arithmetic number, because the mean of its divisors is an integer number (3052200795).

Almost surely, 2^15115661054 is an apocalyptic number.

15115661054 is a deficient number, since it is larger than the sum of its proper divisors (9301945306).

15115661054 is a wasteful number, since it uses less digits than its factorization.

15115661054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581371594.

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 15115661054 in words is "fifteen billion, one hundred fifteen million, six hundred sixty-one thousand, fifty-four".