156922145957 has 2 divisors, whose sum is σ = 156922145958. Its totient is φ = 156922145956.

The previous prime is 156922145929. The next prime is 156922145959. The reversal of 156922145957 is 759541229651.

It is a Cunningham number, because it is equal to 396134²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156922145956 + 1 = 396134^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 156922145957 - 2¹⁰ = 156922144933 is a prime.

It is a super-2 number, since 2×156922145957² (a number of 23 digits) contains 22 as substring.

Together with 156922145959, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156922145959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78461072978 + 78461072979.

It is an arithmetic number, because the mean of its divisors is an integer number (78461072979).

Almost surely, 2^156922145957 is an apocalyptic number.

It is an amenable number.

156922145957 is a deficient number, since it is larger than the sum of its proper divisors (1).

156922145957 is an equidigital number, since it uses as much as digits as its factorization.

156922145957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804000, while the sum is 56.

The spelling of 156922145957 in words is "one hundred fifty-six billion, nine hundred twenty-two million, one hundred forty-five thousand, nine hundred fifty-seven".