513021122215055 has 8 divisors (see below), whose sum is σ = 623042519509872. Its totient is φ = 405472115870848.

The previous prime is 513021122214949. The next prime is 513021122215067. The reversal of 513021122215055 is 550512221120315.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 513021122215055 - 2¹⁶ = 513021122149519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 618097737194 + ... + 618097738023.

It is an arithmetic number, because the mean of its divisors is an integer number (77880314938734).

Almost surely, 2^{513021122215055} is an apocalyptic number.

513021122215055 is a deficient number, since it is larger than the sum of its proper divisors (110021397294817).

513021122215055 is a wasteful number, since it uses less digits than its factorization.

513021122215055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236195475305.

The product of its (nonzero) digits is 30000, while the sum is 35.

The spelling of 513021122215055 in words is "five hundred thirteen trillion, twenty-one billion, one hundred twenty-two million, two hundred fifteen thousand, fifty-five".