15212816140 has 12 divisors (see below), whose sum is σ = 31946913936. Its totient is φ = 6085126448.

The previous prime is 15212816123. The next prime is 15212816153. The reversal of 15212816140 is 4161821251.

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, 380320384 + ... + 380320423.

It is an arithmetic number, because the mean of its divisors is an integer number (2662242828).

Almost surely, 2^15212816140 is an apocalyptic number.

15212816140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15212816140 is an abundant number, since it is smaller than the sum of its proper divisors (16734097796).

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

15212816140 is a wasteful number, since it uses less digits than its factorization.

15212816140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760640816 (or 760640814 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The spelling of 15212816140 in words is "fifteen billion, two hundred twelve million, eight hundred sixteen thousand, one hundred forty".