156217771162223 has 2 divisors, whose sum is σ = 156217771162224. Its totient is φ = 156217771162222.

The previous prime is 156217771162139. The next prime is 156217771162253. The reversal of 156217771162223 is 322261177712651.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156217771162223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156217771162253) 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, 78108885581111 + 78108885581112.

It is an arithmetic number, because the mean of its divisors is an integer number (78108885581112).

Almost surely, 2^{156217771162223} is an apocalyptic number.

156217771162223 is a deficient number, since it is larger than the sum of its proper divisors (1).

156217771162223 is an equidigital number, since it uses as much as digits as its factorization.

156217771162223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2963520, while the sum is 53.

The spelling of 156217771162223 in words is "one hundred fifty-six trillion, two hundred seventeen billion, seven hundred seventy-one million, one hundred sixty-two thousand, two hundred twenty-three".