15980131052864 has 168 divisors, whose sum is σ = 37093140703080. Its totient is φ = 6801706024960.

The previous prime is 15980131052839. The next prime is 15980131052891. The reversal of 15980131052864 is 46825013108951.

It can be written as a sum of positive squares in 4 ways, for example, as 4279900339264 + 11700230713600 = 2068792^2 + 3420560^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25626572 + ... + 26242740.

It is an arithmetic number, because the mean of its divisors is an integer number (220792504185).

Almost surely, 2^{15980131052864} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15980131052864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18546570351540).

15980131052864 is an abundant number, since it is smaller than the sum of its proper divisors (21113009650216).

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

15980131052864 is a wasteful number, since it uses less digits than its factorization.

15980131052864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616417 (or 616396 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 53.

The spelling of 15980131052864 in words is "fifteen trillion, nine hundred eighty billion, one hundred thirty-one million, fifty-two thousand, eight hundred sixty-four".