155252102249813 has 2 divisors, whose sum is σ = 155252102249814. Its totient is φ = 155252102249812.

The previous prime is 155252102249801. The next prime is 155252102249821. The reversal of 155252102249813 is 318942201252551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147759170518129 + 7492931731684 = 12155623^2 + 2737322^2 .

It is a cyclic number.

It is not a de Polignac number, because 155252102249813 - 2¹⁸ = 155252101987669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155252102240813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77626051124906 + 77626051124907.

It is an arithmetic number, because the mean of its divisors is an integer number (77626051124907).

Almost surely, 2^{155252102249813} is an apocalyptic number.

It is an amenable number.

155252102249813 is a deficient number, since it is larger than the sum of its proper divisors (1).

155252102249813 is an equidigital number, since it uses as much as digits as its factorization.

155252102249813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728000, while the sum is 50.

The spelling of 155252102249813 in words is "one hundred fifty-five trillion, two hundred fifty-two billion, one hundred two million, two hundred forty-nine thousand, eight hundred thirteen".