113155551361 has 2 divisors, whose sum is σ = 113155551362. Its totient is φ = 113155551360.

The previous prime is 113155551349. The next prime is 113155551367. The reversal of 113155551361 is 163155551311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88599094336 + 24556457025 = 297656^2 + 156705^2 .

It is an emirp because it is prime and its reverse (163155551311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113155551361 - 2⁷ = 113155551233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113155551361.

It is not a weakly prime, because it can be changed into another prime (113155551367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56577775680 + 56577775681.

It is an arithmetic number, because the mean of its divisors is an integer number (56577775681).

Almost surely, 2^113155551361 is an apocalyptic number.

It is an amenable number.

113155551361 is a deficient number, since it is larger than the sum of its proper divisors (1).

113155551361 is an equidigital number, since it uses as much as digits as its factorization.

113155551361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33750, while the sum is 37.

The spelling of 113155551361 in words is "one hundred thirteen billion, one hundred fifty-five million, five hundred fifty-one thousand, three hundred sixty-one".