13550313988 has 6 divisors (see below), whose sum is σ = 23713049486. Its totient is φ = 6775156992.

The previous prime is 13550313943. The next prime is 13550313989. The reversal of 13550313988 is 88931305531.

It can be written as a sum of positive squares in only one way, i.e., 11276740864 + 2273573124 = 106192^2 + 47682^2 .

It is a super-2 number, since 2×13550313988² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13550313989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1693789245 + ... + 1693789252.

Almost surely, 2^13550313988 is an apocalyptic number.

It is an amenable number.

13550313988 is a deficient number, since it is larger than the sum of its proper divisors (10162735498).

13550313988 is a wasteful number, since it uses less digits than its factorization.

13550313988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387578501 (or 3387578499 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 13550313988 in words is "thirteen billion, five hundred fifty million, three hundred thirteen thousand, nine hundred eighty-eight".