516804204840 has 128 divisors (see below), whose sum is σ = 1932981995520. Its totient is φ = 107387884800.

The previous prime is 516804204803. The next prime is 516804204859. The reversal of 516804204840 is 48402408615.

It is a super-2 number, since 2×516804204840² (a number of 24 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 516804204792 and 516804204801.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27956356 + ... + 27974835.

It is an arithmetic number, because the mean of its divisors is an integer number (15101421840).

Almost surely, 2^516804204840 is an apocalyptic number.

It is an amenable number.

516804204840 is an abundant number, since it is smaller than the sum of its proper divisors (1416177790680).

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

516804204840 is a wasteful number, since it uses less digits than its factorization.

516804204840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55931223 (or 55931219 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 42.

The spelling of 516804204840 in words is "five hundred sixteen billion, eight hundred four million, two hundred four thousand, eight hundred forty".