506657977894 has 8 divisors (see below), whose sum is σ = 780527155248. Its totient is φ = 246482259480.

The previous prime is 506657977849. The next prime is 506657977907. The reversal of 506657977894 is 498779756605.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3423364642 + ... + 3423364789.

It is an arithmetic number, because the mean of its divisors is an integer number (97565894406).

Almost surely, 2^506657977894 is an apocalyptic number.

506657977894 is a deficient number, since it is larger than the sum of its proper divisors (273869177354).

506657977894 is a wasteful number, since it uses less digits than its factorization.

506657977894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6846729470.

The product of its (nonzero) digits is 800150400, while the sum is 73.

The spelling of 506657977894 in words is "five hundred six billion, six hundred fifty-seven million, nine hundred seventy-seven thousand, eight hundred ninety-four".