155335864253 has 2 divisors, whose sum is σ = 155335864254. Its totient is φ = 155335864252.

The previous prime is 155335864249. The next prime is 155335864331. The reversal of 155335864253 is 352468533551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85894127929 + 69441736324 = 293077^2 + 263518^2 .

It is an emirp because it is prime and its reverse (352468533551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155335864253 - 2² = 155335864249 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155335861253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77667932126 + 77667932127.

It is an arithmetic number, because the mean of its divisors is an integer number (77667932127).

Almost surely, 2^155335864253 is an apocalyptic number.

It is an amenable number.

155335864253 is a deficient number, since it is larger than the sum of its proper divisors (1).

155335864253 is an equidigital number, since it uses as much as digits as its factorization.

155335864253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480000, while the sum is 50.

The spelling of 155335864253 in words is "one hundred fifty-five billion, three hundred thirty-five million, eight hundred sixty-four thousand, two hundred fifty-three".