15963399883959 has 48 divisors (see below), whose sum is σ = 25120007095680. Its totient is φ = 8917869363840.

The previous prime is 15963399883903. The next prime is 15963399883969. The reversal of 15963399883959 is 95938899336951.

15963399883959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15963399883959 - 2⁸ = 15963399883703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15963399883969) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8440384 + ... + 10157109.

It is an arithmetic number, because the mean of its divisors is an integer number (523333481160).

Almost surely, 2^{15963399883959} is an apocalyptic number.

15963399883959 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

15963399883959 is a deficient number, since it is larger than the sum of its proper divisors (9156607211721).

15963399883959 is a wasteful number, since it uses less digits than its factorization.

15963399883959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18597600 (or 18597563 counting only the distinct ones).

The product of its digits is 15305500800, while the sum is 87.

The spelling of 15963399883959 in words is "fifteen trillion, nine hundred sixty-three billion, three hundred ninety-nine million, eight hundred eighty-three thousand, nine hundred fifty-nine".