517442121090 has 24 divisors (see below), whose sum is σ = 1345349515068. Its totient is φ = 137984565600.

The previous prime is 517442121083. The next prime is 517442121139. The reversal of 517442121090 is 90121244715.

517442121090 is a `hidden beast` number, since 5 + 1 + 7 + 442 + 121 + 0 + 90 = 666.

517442121090 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 516341407761 + 1100713329 = 718569^2 + 33177^2 .

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, 2874678361 + ... + 2874678540.

Almost surely, 2^517442121090 is an apocalyptic number.

517442121090 is an abundant number, since it is smaller than the sum of its proper divisors (827907393978).

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

517442121090 is a wasteful number, since it uses less digits than its factorization.

517442121090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5749356914 (or 5749356911 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 517442121090 in words is "five hundred seventeen billion, four hundred forty-two million, one hundred twenty-one thousand, ninety".