159999999979 has 2 divisors, whose sum is σ = 159999999980. Its totient is φ = 159999999978.

The previous prime is 159999999961. The next prime is 159999999983. The reversal of 159999999979 is 979999999951.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 159999999979 - 2¹¹ = 159999997931 is a prime.

It is not a weakly prime, because it can be changed into another prime (159999199979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79999999989 + 79999999990.

It is an arithmetic number, because the mean of its divisors is an integer number (79999999990).

Almost surely, 2^159999999979 is an apocalyptic number.

159999999979 is a deficient number, since it is larger than the sum of its proper divisors (1).

159999999979 is an equidigital number, since it uses as much as digits as its factorization.

159999999979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13559717115, while the sum is 94.

The spelling of 159999999979 in words is "one hundred fifty-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred seventy-nine".