156156869149 has 2 divisors, whose sum is σ = 156156869150. Its totient is φ = 156156869148.

The previous prime is 156156869137. The next prime is 156156869159. The reversal of 156156869149 is 941968651651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127024524025 + 29132345124 = 356405^2 + 170682^2 .

It is a cyclic number.

It is not a de Polignac number, because 156156869149 - 2⁵ = 156156869117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156156869159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78078434574 + 78078434575.

It is an arithmetic number, because the mean of its divisors is an integer number (78078434575).

Almost surely, 2^156156869149 is an apocalyptic number.

It is an amenable number.

156156869149 is a deficient number, since it is larger than the sum of its proper divisors (1).

156156869149 is an equidigital number, since it uses as much as digits as its factorization.

156156869149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13996800, while the sum is 61.

The spelling of 156156869149 in words is "one hundred fifty-six billion, one hundred fifty-six million, eight hundred sixty-nine thousand, one hundred forty-nine".