156368100855601 has 2 divisors, whose sum is σ = 156368100855602. Its totient is φ = 156368100855600.

The previous prime is 156368100855587. The next prime is 156368100855623. The reversal of 156368100855601 is 106558001863651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128317942718001 + 28050158137600 = 11327751^2 + 5296240^2 .

It is a cyclic number.

It is not a de Polignac number, because 156368100855601 - 2⁹ = 156368100855089 is a prime.

It is not a weakly prime, because it can be changed into another prime (156368100805601) 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, 78184050427800 + 78184050427801.

It is an arithmetic number, because the mean of its divisors is an integer number (78184050427801).

Almost surely, 2^{156368100855601} is an apocalyptic number.

It is an amenable number.

156368100855601 is a deficient number, since it is larger than the sum of its proper divisors (1).

156368100855601 is an equidigital number, since it uses as much as digits as its factorization.

156368100855601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184000, while the sum is 55.

The spelling of 156368100855601 in words is "one hundred fifty-six trillion, three hundred sixty-eight billion, one hundred million, eight hundred fifty-five thousand, six hundred one".