513620640607 has 2 divisors, whose sum is σ = 513620640608. Its totient is φ = 513620640606.

The previous prime is 513620640593. The next prime is 513620640629. The reversal of 513620640607 is 706046026315.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513620640607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 513620640607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513620641607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256810320303 + 256810320304.

It is an arithmetic number, because the mean of its divisors is an integer number (256810320304).

Almost surely, 2^513620640607 is an apocalyptic number.

513620640607 is a deficient number, since it is larger than the sum of its proper divisors (1).

513620640607 is an equidigital number, since it uses as much as digits as its factorization.

513620640607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 513620640607 in words is "five hundred thirteen billion, six hundred twenty million, six hundred forty thousand, six hundred seven".