516536603646 has 128 divisors (see below), whose sum is σ = 1309424762880. Its totient is φ = 132436643328.

The previous prime is 516536603633. The next prime is 516536603647. The reversal of 516536603646 is 646306635615.

It is a super-2 number, since 2×516536603646² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516536603647) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1753846 + ... + 2027078.

It is an arithmetic number, because the mean of its divisors is an integer number (10229880960).

Almost surely, 2^516536603646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 516536603646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (654712381440).

516536603646 is an abundant number, since it is smaller than the sum of its proper divisors (792888159234).

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

516536603646 is a wasteful number, since it uses less digits than its factorization.

516536603646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273390.

The product of its (nonzero) digits is 6998400, while the sum is 51.

The spelling of 516536603646 in words is "five hundred sixteen billion, five hundred thirty-six million, six hundred three thousand, six hundred forty-six".