156226091251 has 2 divisors, whose sum is σ = 156226091252. Its totient is φ = 156226091250.

The previous prime is 156226091249. The next prime is 156226091257. The reversal of 156226091251 is 152190622651.

It is a weak prime.

It is an emirp because it is prime and its reverse (152190622651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156226091251 - 2¹ = 156226091249 is a prime.

Together with 156226091249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (156226091257) 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, 78113045625 + 78113045626.

It is an arithmetic number, because the mean of its divisors is an integer number (78113045626).

Almost surely, 2^156226091251 is an apocalyptic number.

156226091251 is a deficient number, since it is larger than the sum of its proper divisors (1).

156226091251 is an equidigital number, since it uses as much as digits as its factorization.

156226091251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 156226091251 in words is "one hundred fifty-six billion, two hundred twenty-six million, ninety-one thousand, two hundred fifty-one".