516497985490 has 16 divisors (see below), whose sum is σ = 944937299160. Its totient is φ = 203212321920.

The previous prime is 516497985467. The next prime is 516497985491. The reversal of 516497985490 is 94589794615.

It can be written as a sum of positive squares in 4 ways, for example, as 337515683521 + 178982301969 = 580961^2 + 423063^2 .

It is not an unprimeable number, because it can be changed into a prime (516497985491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423358395 + ... + 423359614.

Almost surely, 2^516497985490 is an apocalyptic number.

516497985490 is a deficient number, since it is larger than the sum of its proper divisors (428439313670).

516497985490 is a wasteful number, since it uses less digits than its factorization.

516497985490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846718077.

The product of its (nonzero) digits is 97977600, while the sum is 67.

The spelling of 516497985490 in words is "five hundred sixteen billion, four hundred ninety-seven million, nine hundred eighty-five thousand, four hundred ninety".