15215985330 has 64 divisors (see below), whose sum is σ = 44945687808. Its totient is φ = 3210405120.

The previous prime is 15215985307. The next prime is 15215985331. The reversal of 15215985330 is 3358951251.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (15215985331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2784081 + ... + 2789540.

It is an arithmetic number, because the mean of its divisors is an integer number (702276372).

Almost surely, 2^15215985330 is an apocalyptic number.

15215985330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15215985330 is an abundant number, since it is smaller than the sum of its proper divisors (29729702478).

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

15215985330 is a wasteful number, since it uses less digits than its factorization.

15215985330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5573651.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 15215985330 in words is "fifteen billion, two hundred fifteen million, nine hundred eighty-five thousand, three hundred thirty".