516891763585064 has 48 divisors (see below), whose sum is σ = 1128278865129300. Its totient is φ = 221353183258368.

The previous prime is 516891763585033. The next prime is 516891763585079. The reversal of 516891763585064 is 460585367198615.

It can be written as a sum of positive squares in 2 ways, for example, as 412200845452900 + 104690918132164 = 20302730^2 + 10231858^2 .

It is a junction number, because it is equal to n+sod(n) for n = 516891763584982 and 516891763585000.

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, 510977039 + ... + 511987614.

Almost surely, 2^{516891763585064} is an apocalyptic number.

It is an amenable number.

516891763585064 is an abundant number, since it is smaller than the sum of its proper divisors (611387101544236).

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

516891763585064 is a wasteful number, since it uses less digits than its factorization.

516891763585064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022965962 (or 1022965951 counting only the distinct ones).

The product of its (nonzero) digits is 1306368000, while the sum is 74.

The spelling of 516891763585064 in words is "five hundred sixteen trillion, eight hundred ninety-one billion, seven hundred sixty-three million, five hundred eighty-five thousand, sixty-four".