517342307720 has 48 divisors (see below), whose sum is σ = 1354064310540. Its totient is φ = 177374504832.

The previous prime is 517342307717. The next prime is 517342307749. The reversal of 517342307720 is 27703243715.

It can be written as a sum of positive squares in 2 ways, for example, as 508217855236 + 9124452484 = 712894^2 + 95522^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131973119 + ... + 131977038.

Almost surely, 2^517342307720 is an apocalyptic number.

It is an amenable number.

517342307720 is an abundant number, since it is smaller than the sum of its proper divisors (836722002820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

517342307720 is a wasteful number, since it uses less digits than its factorization.

517342307720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263950182 (or 263950171 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 41.

The spelling of 517342307720 in words is "five hundred seventeen billion, three hundred forty-two million, three hundred seven thousand, seven hundred twenty".