159494977663 has 18 divisors (see below), whose sum is σ = 183284131128. Its totient is φ = 135960981840.

The previous prime is 159494977657. The next prime is 159494977673. The reversal of 159494977663 is 366779494951.

It is not a de Polignac number, because 159494977663 - 2⁹ = 159494977151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 159494977592 and 159494977601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159494977613) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 286346181 + ... + 286346737.

Almost surely, 2^159494977663 is an apocalyptic number.

159494977663 is a deficient number, since it is larger than the sum of its proper divisors (23789153465).

159494977663 is an frugal number, since it uses more digits than its factorization.

159494977663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663 (or 835 counting only the distinct ones).

The product of its digits is 308629440, while the sum is 70.

The spelling of 159494977663 in words is "one hundred fifty-nine billion, four hundred ninety-four million, nine hundred seventy-seven thousand, six hundred sixty-three".