513400606665 has 32 divisors (see below), whose sum is σ = 823222987776. Its totient is φ = 273220147200.

The previous prime is 513400606657. The next prime is 513400606721. The reversal of 513400606665 is 566606004315.

It is not a de Polignac number, because 513400606665 - 2³ = 513400606657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18042289 + ... + 18070721.

It is an arithmetic number, because the mean of its divisors is an integer number (25725718368).

Almost surely, 2^513400606665 is an apocalyptic number.

It is an amenable number.

513400606665 is a deficient number, since it is larger than the sum of its proper divisors (309822381111).

513400606665 is a wasteful number, since it uses less digits than its factorization.

513400606665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31009.

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 513400606665 in words is "five hundred thirteen billion, four hundred million, six hundred six thousand, six hundred sixty-five".