15197842920 has 512 divisors, whose sum is σ = 54083635200. Its totient is φ = 3382444032.

The previous prime is 15197842889. The next prime is 15197842951. The reversal of 15197842920 is 2924879151.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (15197842889) and next prime (15197842951).

It is a self number, because there is not a number n which added to its sum of digits gives 15197842920.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 110933092 + ... + 110933228.

It is an arithmetic number, because the mean of its divisors is an integer number (105632100).

Almost surely, 2^15197842920 is an apocalyptic number.

15197842920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15197842920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27041817600).

15197842920 is an abundant number, since it is smaller than the sum of its proper divisors (38885792280).

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

15197842920 is a wasteful number, since it uses less digits than its factorization.

15197842920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 15197842920 in words is "fifteen billion, one hundred ninety-seven million, eight hundred forty-two thousand, nine hundred twenty".