15213136488 has 64 divisors (see below), whose sum is σ = 42074795520. Its totient is φ = 4545105600.

The previous prime is 15213136459. The next prime is 15213136507. The reversal of 15213136488 is 88463131251.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387070 + ... + 424557.

It is an arithmetic number, because the mean of its divisors is an integer number (657418680).

Almost surely, 2^15213136488 is an apocalyptic number.

It is an amenable number.

15213136488 is an abundant number, since it is smaller than the sum of its proper divisors (26861659032).

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

15213136488 is a wasteful number, since it uses less digits than its factorization.

15213136488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811718 (or 811714 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The spelling of 15213136488 in words is "fifteen billion, two hundred thirteen million, one hundred thirty-six thousand, four hundred eighty-eight".