15554561132 has 24 divisors (see below), whose sum is σ = 29940495312. Its totient is φ = 7070252640.

The previous prime is 15554561131. The next prime is 15554561137. The reversal of 15554561132 is 23116545551.

It is not an unprimeable number, because it can be changed into a prime (15554561131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1455473 + ... + 1466120.

It is an arithmetic number, because the mean of its divisors is an integer number (1247520638).

Almost surely, 2^15554561132 is an apocalyptic number.

It is an amenable number.

15554561132 is a deficient number, since it is larger than the sum of its proper divisors (14385934180).

15554561132 is a wasteful number, since it uses less digits than its factorization.

15554561132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921630 (or 2921606 counting only the distinct ones).

The product of its digits is 90000, while the sum is 38.

The spelling of 15554561132 in words is "fifteen billion, five hundred fifty-four million, five hundred sixty-one thousand, one hundred thirty-two".