516831654946 has 4 divisors (see below), whose sum is σ = 775247482422. Its totient is φ = 258415827472.

The previous prime is 516831654919. The next prime is 516831654967. The reversal of 516831654946 is 649456138615.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 503638605625 + 13193049321 = 709675^2 + 114861^2 .

It is a super-2 number, since 2×516831654946² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129207913735 + ... + 129207913738.

Almost surely, 2^516831654946 is an apocalyptic number.

516831654946 is a deficient number, since it is larger than the sum of its proper divisors (258415827476).

516831654946 is a wasteful number, since it uses less digits than its factorization.

516831654946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258415827475.

The product of its digits is 18662400, while the sum is 58.

The spelling of 516831654946 in words is "five hundred sixteen billion, eight hundred thirty-one million, six hundred fifty-four thousand, nine hundred forty-six".