506251043055766 has 4 divisors (see below), whose sum is σ = 759376564583652. Its totient is φ = 253125521527882.

The previous prime is 506251043055761. The next prime is 506251043055811. The reversal of 506251043055766 is 667550340152605.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506251043055761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126562760763940 + ... + 126562760763943.

It is an arithmetic number, because the mean of its divisors is an integer number (189844141145913).

Almost surely, 2^{506251043055766} is an apocalyptic number.

506251043055766 is a deficient number, since it is larger than the sum of its proper divisors (253125521527886).

506251043055766 is a wasteful number, since it uses less digits than its factorization.

506251043055766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253125521527885.

The product of its (nonzero) digits is 22680000, while the sum is 55.

The spelling of 506251043055766 in words is "five hundred six trillion, two hundred fifty-one billion, forty-three million, fifty-five thousand, seven hundred sixty-six".