155800713613 has 2 divisors, whose sum is σ = 155800713614. Its totient is φ = 155800713612.

The previous prime is 155800713557. The next prime is 155800713643. The reversal of 155800713613 is 316317008551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115356688164 + 40444025449 = 339642^2 + 201107^2 .

It is a cyclic number.

It is not a de Polignac number, because 155800713613 - 2³⁷ = 18361760141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155800713643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77900356806 + 77900356807.

It is an arithmetic number, because the mean of its divisors is an integer number (77900356807).

Almost surely, 2^155800713613 is an apocalyptic number.

It is an amenable number.

155800713613 is a deficient number, since it is larger than the sum of its proper divisors (1).

155800713613 is an equidigital number, since it uses as much as digits as its factorization.

155800713613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 155800713613 in words is "one hundred fifty-five billion, eight hundred million, seven hundred thirteen thousand, six hundred thirteen".