15243555040 has 288 divisors, whose sum is σ = 43381578240. Its totient is φ = 5043741696.

The previous prime is 15243555031. The next prime is 15243555077. The reversal of 15243555040 is 4055534251.

It is a junction number, because it is equal to n+sod(n) for n = 15243554987 and 15243555005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34723141 + ... + 34723579.

It is an arithmetic number, because the mean of its divisors is an integer number (150630480).

Almost surely, 2^15243555040 is an apocalyptic number.

15243555040 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 15243555040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21690789120).

15243555040 is an abundant number, since it is smaller than the sum of its proper divisors (28138023200).

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

15243555040 is a wasteful number, since it uses less digits than its factorization.

15243555040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 15243555040 in words is "fifteen billion, two hundred forty-three million, five hundred fifty-five thousand, forty".