156811738243265 has 12 divisors (see below), whose sum is σ = 218896385629716. Its totient is φ = 107528049080928.

The previous prime is 156811738243249. The next prime is 156811738243397. The reversal of 156811738243265 is 562342837118651.

It can be written as a sum of positive squares in 2 ways, for example, as 123952795961281 + 32858942281984 = 11133409^2 + 5732272^2 .

It is not a de Polignac number, because 156811738243265 - 2⁴ = 156811738243249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156811738243198 and 156811738243207.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 320023955354 + ... + 320023955843.

It is an arithmetic number, because the mean of its divisors is an integer number (18241365469143).

Almost surely, 2^{156811738243265} is an apocalyptic number.

It is an amenable number.

156811738243265 is a deficient number, since it is larger than the sum of its proper divisors (62084647386451).

156811738243265 is an equidigital number, since it uses as much as digits as its factorization.

156811738243265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640047911216 (or 640047911209 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 62.

The spelling of 156811738243265 in words is "one hundred fifty-six trillion, eight hundred eleven billion, seven hundred thirty-eight million, two hundred forty-three thousand, two hundred sixty-five".