15504365140 has 96 divisors (see below), whose sum is σ = 36456376320. Its totient is φ = 5491113600.

The previous prime is 15504365131. The next prime is 15504365167. The reversal of 15504365140 is 4156340551.

It is a junction number, because it is equal to n+sod(n) for n = 15504365096 and 15504365105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1290481 + ... + 1302439.

It is an arithmetic number, because the mean of its divisors is an integer number (379753920).

Almost surely, 2^15504365140 is an apocalyptic number.

15504365140 is a gapful number since it is divisible by the number (10) 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 15504365140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18228188160).

15504365140 is an abundant number, since it is smaller than the sum of its proper divisors (20952011180).

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

15504365140 is a wasteful number, since it uses less digits than its factorization.

15504365140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12133 (or 12131 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 15504365140 in words is "fifteen billion, five hundred four million, three hundred sixty-five thousand, one hundred forty".