156938941979 has 2 divisors, whose sum is σ = 156938941980. Its totient is φ = 156938941978.

The previous prime is 156938941961. The next prime is 156938942081. The reversal of 156938941979 is 979149839651.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 156938941979 - 2⁸ = 156938941723 is a prime.

It is not a weakly prime, because it can be changed into another prime (156938941079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78469470989 + 78469470990.

It is an arithmetic number, because the mean of its divisors is an integer number (78469470990).

Almost surely, 2^156938941979 is an apocalyptic number.

156938941979 is a deficient number, since it is larger than the sum of its proper divisors (1).

156938941979 is an equidigital number, since it uses as much as digits as its factorization.

156938941979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132269760, while the sum is 71.

The spelling of 156938941979 in words is "one hundred fifty-six billion, nine hundred thirty-eight million, nine hundred forty-one thousand, nine hundred seventy-nine".