15963055680 has 672 divisors, whose sum is σ = 62034505344. Its totient is φ = 3456921600.

The previous prime is 15963055673. The next prime is 15963055681. The reversal of 15963055680 is 8655036951.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15963055681) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 514937265 + ... + 514937295.

It is an arithmetic number, because the mean of its divisors is an integer number (92313252).

Almost surely, 2^15963055680 is an apocalyptic number.

15963055680 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 15963055680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31017252672).

15963055680 is an abundant number, since it is smaller than the sum of its proper divisors (46071449664).

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

15963055680 is a wasteful number, since it uses less digits than its factorization.

15963055680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 15963055680 in words is "fifteen billion, nine hundred sixty-three million, fifty-five thousand, six hundred eighty".