15500551164 has 96 divisors (see below), whose sum is σ = 41798615040. Its totient is φ = 4379168448.

The previous prime is 15500551163. The next prime is 15500551181. The reversal of 15500551164 is 46115500551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15500551163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10892157 + ... + 10893579.

It is an arithmetic number, because the mean of its divisors is an integer number (435402240).

Almost surely, 2^15500551164 is an apocalyptic number.

15500551164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15500551164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20899307520).

15500551164 is an abundant number, since it is smaller than the sum of its proper divisors (26298063876).

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

15500551164 is a wasteful number, since it uses less digits than its factorization.

15500551164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2799 (or 2797 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 33.

The spelling of 15500551164 in words is "fifteen billion, five hundred million, five hundred fifty-one thousand, one hundred sixty-four".