15549960144 has 20 divisors (see below), whose sum is σ = 40170730496. Its totient is φ = 5183320032.

The previous prime is 15549960131. The next prime is 15549960191. The reversal of 15549960144 is 44106994551.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 323957503 = 15549960144 / (1 + 5 + 5 + 4 + 9 + 9 + 6 + 0 + 1 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 15549960093 and 15549960102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161978704 + ... + 161978799.

Almost surely, 2^15549960144 is an apocalyptic number.

It is an amenable number.

15549960144 is an abundant number, since it is smaller than the sum of its proper divisors (24620770352).

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

15549960144 is a wasteful number, since it uses less digits than its factorization.

15549960144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323957514 (or 323957508 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 48.

The spelling of 15549960144 in words is "fifteen billion, five hundred forty-nine million, nine hundred sixty thousand, one hundred forty-four".