15940163800880 has 320 divisors, whose sum is σ = 44289315302400. Its totient is φ = 5270216232960.

The previous prime is 15940163800853. The next prime is 15940163800919. The reversal of 15940163800880 is 8800836104951.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 80876534 + ... + 81073386.

It is an arithmetic number, because the mean of its divisors is an integer number (138404110320).

Almost surely, 2^{15940163800880} is an apocalyptic number.

15940163800880 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 15940163800880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22144657651200).

15940163800880 is an abundant number, since it is smaller than the sum of its proper divisors (28349151501520).

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

15940163800880 is a wasteful number, since it uses less digits than its factorization.

15940163800880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197092 (or 197086 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 53.

The spelling of 15940163800880 in words is "fifteen trillion, nine hundred forty billion, one hundred sixty-three million, eight hundred thousand, eight hundred eighty".