15505004564 has 24 divisors (see below), whose sum is σ = 32834128320. Its totient is φ = 6254119296.

The previous prime is 15505004527. The next prime is 15505004611. The reversal of 15505004564 is 46540050551.

It is a congruent number.

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, 16286294 + ... + 16287245.

It is an arithmetic number, because the mean of its divisors is an integer number (1368088680).

Almost surely, 2^15505004564 is an apocalyptic number.

15505004564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

15505004564 is an abundant number, since it is smaller than the sum of its proper divisors (17329123756).

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

15505004564 is a wasteful number, since it uses less digits than its factorization.

15505004564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32573567 (or 32573565 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 15505004564 in words is "fifteen billion, five hundred five million, four thousand, five hundred sixty-four".