159521999963 has 2 divisors, whose sum is σ = 159521999964. Its totient is φ = 159521999962.

The previous prime is 159521999957. The next prime is 159522000007. The reversal of 159521999963 is 369999125951.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 159521999963 - 2¹⁸ = 159521737819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 159521999893 and 159521999902.

It is not a weakly prime, because it can be changed into another prime (159521999953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79760999981 + 79760999982.

It is an arithmetic number, because the mean of its divisors is an integer number (79760999982).

Almost surely, 2^159521999963 is an apocalyptic number.

159521999963 is a deficient number, since it is larger than the sum of its proper divisors (1).

159521999963 is an equidigital number, since it uses as much as digits as its factorization.

159521999963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53144100, while the sum is 68.

The spelling of 159521999963 in words is "one hundred fifty-nine billion, five hundred twenty-one million, nine hundred ninety-nine thousand, nine hundred sixty-three".