517617204707442 has 32 divisors (see below), whose sum is σ = 1185140584599552. Its totient is φ = 147638686757904.

The previous prime is 517617204707381. The next prime is 517617204707453. The reversal of 517617204707442 is 244707402716715.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10497606658 + ... + 10497655965.

It is an arithmetic number, because the mean of its divisors is an integer number (37035643268736).

Almost surely, 2^{517617204707442} is an apocalyptic number.

517617204707442 is an abundant number, since it is smaller than the sum of its proper divisors (667523379892110).

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

517617204707442 is a wasteful number, since it uses less digits than its factorization.

517617204707442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20995263222.

The product of its (nonzero) digits is 18439680, while the sum is 57.

The spelling of 517617204707442 in words is "five hundred seventeen trillion, six hundred seventeen billion, two hundred four million, seven hundred seven thousand, four hundred forty-two".