156970050137 has 4 divisors (see below), whose sum is σ = 166203582516. Its totient is φ = 147736517760.

The previous prime is 156970050131. The next prime is 156970050143. The reversal of 156970050137 is 731050079651.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (156970050131) and next prime (156970050143).

It can be written as a sum of positive squares in 2 ways, for example, as 71001464521 + 85968585616 = 266461^2 + 293204^2 .

It is a cyclic number.

It is not a de Polignac number, because 156970050137 - 2²⁰ = 156969001561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156970050131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4616766164 + ... + 4616766197.

It is an arithmetic number, because the mean of its divisors is an integer number (41550895629).

Almost surely, 2^156970050137 is an apocalyptic number.

156970050137 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

156970050137 is a deficient number, since it is larger than the sum of its proper divisors (9233532379).

156970050137 is an equidigital number, since it uses as much as digits as its factorization.

156970050137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9233532378.

The product of its (nonzero) digits is 198450, while the sum is 44.

The spelling of 156970050137 in words is "one hundred fifty-six billion, nine hundred seventy million, fifty thousand, one hundred thirty-seven".