155011443612613 has 6 divisors (see below), whose sum is σ = 180319434406566. Its totient is φ = 132866951667912.

The previous prime is 155011443612533. The next prime is 155011443612643. The reversal of 155011443612613 is 316216344110551.

155011443612613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 152824928368644 + 2186515243969 = 12362238^2 + 1478687^2 .

It is a de Polignac number, because none of the positive numbers 2^k-155011443612613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155011443612613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155011443612643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1581749424570 + ... + 1581749424667.

It is an arithmetic number, because the mean of its divisors is an integer number (30053239067761).

Almost surely, 2^{155011443612613} is an apocalyptic number.

It is an amenable number.

155011443612613 is a deficient number, since it is larger than the sum of its proper divisors (25307990793953).

155011443612613 is an equidigital number, since it uses as much as digits as its factorization.

155011443612613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3163498849251 (or 3163498849244 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 155011443612613 in words is "one hundred fifty-five trillion, eleven billion, four hundred forty-three million, six hundred twelve thousand, six hundred thirteen".