155143917263 has 2 divisors, whose sum is σ = 155143917264. Its totient is φ = 155143917262.

The previous prime is 155143917239. The next prime is 155143917343. The reversal of 155143917263 is 362719341551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155143917263 - 2³² = 150848949967 is a prime.

It is a super-2 number, since 2×155143917263² (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 (155143917233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77571958631 + 77571958632.

It is an arithmetic number, because the mean of its divisors is an integer number (77571958632).

Almost surely, 2^155143917263 is an apocalyptic number.

155143917263 is a deficient number, since it is larger than the sum of its proper divisors (1).

155143917263 is an equidigital number, since it uses as much as digits as its factorization.

155143917263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 47.

The spelling of 155143917263 in words is "one hundred fifty-five billion, one hundred forty-three million, nine hundred seventeen thousand, two hundred sixty-three".