15520942080 has 576 divisors, whose sum is σ = 62859888000. Its totient is φ = 3540418560.

The previous prime is 15520942049. The next prime is 15520942093. The reversal of 15520942080 is 8024902551.

15520942080 is a `hidden beast` number, since 1 + 552 + 0 + 9 + 4 + 20 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31610635 + ... + 31611125.

It is an arithmetic number, because the mean of its divisors is an integer number (109131750).

Almost surely, 2^15520942080 is an apocalyptic number.

15520942080 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 15520942080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31429944000).

15520942080 is an abundant number, since it is smaller than the sum of its proper divisors (47338945920).

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

15520942080 is an equidigital number, since it uses as much as digits as its factorization.

15520942080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 15520942080 in words is "fifteen billion, five hundred twenty million, nine hundred forty-two thousand, eighty".