518157651553 has 2 divisors, whose sum is σ = 518157651554. Its totient is φ = 518157651552.

The previous prime is 518157651551. The next prime is 518157651619. The reversal of 518157651553 is 355156751815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 358810584064 + 159347067489 = 599008^2 + 399183^2 .

It is a cyclic number.

It is not a de Polignac number, because 518157651553 - 2¹ = 518157651551 is a prime.

Together with 518157651551, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 518157651553.

It is not a weakly prime, because it can be changed into another prime (518157651551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259078825776 + 259078825777.

It is an arithmetic number, because the mean of its divisors is an integer number (259078825777).

Almost surely, 2^518157651553 is an apocalyptic number.

It is an amenable number.

518157651553 is a deficient number, since it is larger than the sum of its proper divisors (1).

518157651553 is an equidigital number, since it uses as much as digits as its factorization.

518157651553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3150000, while the sum is 52.

The spelling of 518157651553 in words is "five hundred eighteen billion, one hundred fifty-seven million, six hundred fifty-one thousand, five hundred fifty-three".