516522215706 has 32 divisors (see below), whose sum is σ = 1242760220160. Its totient is φ = 139810524336.

The previous prime is 516522215669. The next prime is 516522215711. The reversal of 516522215706 is 607512225615.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 323634676 + ... + 323636271.

It is an arithmetic number, because the mean of its divisors is an integer number (38836256880).

Almost surely, 2^516522215706 is an apocalyptic number.

516522215706 is an abundant number, since it is smaller than the sum of its proper divisors (726238004454).

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

516522215706 is a wasteful number, since it uses less digits than its factorization.

516522215706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647270978.

The product of its (nonzero) digits is 252000, while the sum is 42.

Subtracting 516522215706 from its reverse (607512225615), we obtain a palindrome (90990009909).

The spelling of 516522215706 in words is "five hundred sixteen billion, five hundred twenty-two million, two hundred fifteen thousand, seven hundred six".