15720115020 has 48 divisors (see below), whose sum is σ = 44025811200. Its totient is φ = 4191126976.

The previous prime is 15720115007. The next prime is 15720115043. The reversal of 15720115020 is 2051102751.

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, 280249 + ... + 331631.

It is an arithmetic number, because the mean of its divisors is an integer number (917204400).

Almost surely, 2^15720115020 is an apocalyptic number.

15720115020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15720115020 is an abundant number, since it is smaller than the sum of its proper divisors (28305696180).

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

15720115020 is a wasteful number, since it uses less digits than its factorization.

15720115020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56494 (or 56492 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 24.

Adding to 15720115020 its reverse (2051102751), we get a palindrome (17771217771).

The spelling of 15720115020 in words is "fifteen billion, seven hundred twenty million, one hundred fifteen thousand, twenty".