15720560551920 has 480 divisors, whose sum is σ = 57103557852672. Its totient is φ = 3504630786048.

The previous prime is 15720560551873. The next prime is 15720560551951. The reversal of 15720560551920 is 2915506502751.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 15720560551920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2401182087 + ... + 2401188633.

Almost surely, 2^{15720560551920} is an apocalyptic number.

15720560551920 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 15720560551920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28551778926336).

15720560551920 is an abundant number, since it is smaller than the sum of its proper divisors (41382997300752).

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

15720560551920 is a wasteful number, since it uses less digits than its factorization.

15720560551920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7429 (or 7380 counting only the distinct ones).

The product of its (nonzero) digits is 945000, while the sum is 48.

The spelling of 15720560551920 in words is "fifteen trillion, seven hundred twenty billion, five hundred sixty million, five hundred fifty-one thousand, nine hundred twenty".