15005131540 has 24 divisors (see below), whose sum is σ = 36012316032. Its totient is φ = 5144616480.

The previous prime is 15005131507. The next prime is 15005131553. The reversal of 15005131540 is 4513150051.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53589616 + ... + 53589895.

It is an arithmetic number, because the mean of its divisors is an integer number (1500513168).

Almost surely, 2^15005131540 is an apocalyptic number.

15005131540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15005131540 is an abundant number, since it is smaller than the sum of its proper divisors (21007184492).

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

15005131540 is a wasteful number, since it uses less digits than its factorization.

15005131540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107179527 (or 107179525 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

Adding to 15005131540 its reverse (4513150051), we get a palindrome (19518281591).

The spelling of 15005131540 in words is "fifteen billion, five million, one hundred thirty-one thousand, five hundred forty".