15615660105120 has 192 divisors, whose sum is σ = 49888155985920. Its totient is φ = 4105030272000.

The previous prime is 15615660105043. The next prime is 15615660105173. The reversal of 15615660105120 is 2150106651651.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 345923511 + ... + 345968649.

It is an arithmetic number, because the mean of its divisors is an integer number (259834145760).

Almost surely, 2^{15615660105120} is an apocalyptic number.

15615660105120 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 15615660105120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24944077992960).

15615660105120 is an abundant number, since it is smaller than the sum of its proper divisors (34272495880800).

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

15615660105120 is a wasteful number, since it uses less digits than its factorization.

15615660105120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55379 (or 55371 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 39.

Adding to 15615660105120 its reverse (2150106651651), we get a palindrome (17765766756771).

The spelling of 15615660105120 in words is "fifteen trillion, six hundred fifteen billion, six hundred sixty million, one hundred five thousand, one hundred twenty".