15550660168 has 8 divisors (see below), whose sum is σ = 29157487830. Its totient is φ = 7775330080.

The previous prime is 15550660159. The next prime is 15550660241. The reversal of 15550660168 is 86106605551.

It can be written as a sum of positive squares in only one way, i.e., 8697800644 + 6852859524 = 93262^2 + 82782^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 971916253 + ... + 971916268.

Almost surely, 2^15550660168 is an apocalyptic number.

It is an amenable number.

15550660168 is a deficient number, since it is larger than the sum of its proper divisors (13606827662).

15550660168 is a wasteful number, since it uses less digits than its factorization.

15550660168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943832527 (or 1943832523 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 15550660168 in words is "fifteen billion, five hundred fifty million, six hundred sixty thousand, one hundred sixty-eight".