15215440132 has 12 divisors (see below), whose sum is σ = 26964071680. Its totient is φ = 7511419656.

The previous prime is 15215440129. The next prime is 15215440183. The reversal of 15215440132 is 23104451251.

It is a self number, because there is not a number n which added to its sum of digits gives 15215440132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24074748 + ... + 24075379.

Almost surely, 2^15215440132 is an apocalyptic number.

It is an amenable number.

15215440132 is a deficient number, since it is larger than the sum of its proper divisors (11748631548).

15215440132 is a wasteful number, since it uses less digits than its factorization.

15215440132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48150210 (or 48150208 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 15215440132 its reverse (23104451251), we get a palindrome (38319891383).

The spelling of 15215440132 in words is "fifteen billion, two hundred fifteen million, four hundred forty thousand, one hundred thirty-two".