155662117319 has 2 divisors, whose sum is σ = 155662117320. Its totient is φ = 155662117318.

The previous prime is 155662117279. The next prime is 155662117327. The reversal of 155662117319 is 913711266551.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155662117319 is a prime.

It is a super-2 number, since 2×155662117319² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155662017319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77831058659 + 77831058660.

It is an arithmetic number, because the mean of its divisors is an integer number (77831058660).

Almost surely, 2^155662117319 is an apocalyptic number.

155662117319 is a deficient number, since it is larger than the sum of its proper divisors (1).

155662117319 is an equidigital number, since it uses as much as digits as its factorization.

155662117319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 47.

The spelling of 155662117319 in words is "one hundred fifty-five billion, six hundred sixty-two million, one hundred seventeen thousand, three hundred nineteen".