156174720656741 has 2 divisors, whose sum is σ = 156174720656742. Its totient is φ = 156174720656740.

The previous prime is 156174720656627. The next prime is 156174720656743. The reversal of 156174720656741 is 147656027471651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142862949495841 + 13311771160900 = 11952529^2 + 3648530^2 .

It is a cyclic number.

It is not a de Polignac number, because 156174720656741 - 2¹⁴ = 156174720640357 is a prime.

It is a super-2 number, since 2×156174720656741² (a number of 29 digits) contains 22 as substring.

Together with 156174720656743, 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 (156174720656743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78087360328370 + 78087360328371.

It is an arithmetic number, because the mean of its divisors is an integer number (78087360328371).

Almost surely, 2^{156174720656741} is an apocalyptic number.

It is an amenable number.

156174720656741 is a deficient number, since it is larger than the sum of its proper divisors (1).

156174720656741 is an equidigital number, since it uses as much as digits as its factorization.

156174720656741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59270400, while the sum is 62.

The spelling of 156174720656741 in words is "one hundred fifty-six trillion, one hundred seventy-four billion, seven hundred twenty million, six hundred fifty-six thousand, seven hundred forty-one".