15115661602 has 16 divisors (see below), whose sum is σ = 23241490272. Its totient is φ = 7369115040.

The previous prime is 15115661599. The next prime is 15115661657. The reversal of 15115661602 is 20616651151.

It is a super-4 number, since 4×15115661602⁴ (a number of 42 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104803 + ... + 203014.

It is an arithmetic number, because the mean of its divisors is an integer number (1452593142).

Almost surely, 2^15115661602 is an apocalyptic number.

15115661602 is a deficient number, since it is larger than the sum of its proper divisors (8125828670).

15115661602 is a wasteful number, since it uses less digits than its factorization.

15115661602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308433.

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 15115661602 in words is "fifteen billion, one hundred fifteen million, six hundred sixty-one thousand, six hundred two".