15254542040 has 128 divisors (see below), whose sum is σ = 36237499200. Its totient is φ = 5772902400.

The previous prime is 15254541971. The next prime is 15254542063. The reversal of 15254542040 is 4024545251.

It is a junction number, because it is equal to n+sod(n) for n = 15254541988 and 15254542006.

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, 8469140 + ... + 8470940.

Almost surely, 2^15254542040 is an apocalyptic number.

15254542040 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 15254542040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18118749600).

15254542040 is an abundant number, since it is smaller than the sum of its proper divisors (20982957160).

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

15254542040 is a wasteful number, since it uses less digits than its factorization.

15254542040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005 (or 2001 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 32.

The spelling of 15254542040 in words is "fifteen billion, two hundred fifty-four million, five hundred forty-two thousand, forty".