15503240240 has 20 divisors (see below), whose sum is σ = 36045033744. Its totient is φ = 6201296064.

The previous prime is 15503240201. The next prime is 15503240261. The reversal of 15503240240 is 4204230551.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96895172 + ... + 96895331.

Almost surely, 2^15503240240 is an apocalyptic number.

15503240240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15503240240 is an abundant number, since it is smaller than the sum of its proper divisors (20541793504).

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

15503240240 is a wasteful number, since it uses less digits than its factorization.

15503240240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193790516 (or 193790510 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 15503240240 its reverse (4204230551), we get a palindrome (19707470791).

The spelling of 15503240240 in words is "fifteen billion, five hundred three million, two hundred forty thousand, two hundred forty".