503959046551 has 4 divisors (see below), whose sum is σ = 505011153600. Its totient is φ = 502906939504.

The previous prime is 503959046509. The next prime is 503959046557. The reversal of 503959046551 is 155640959305.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-503959046551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503959046557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526052806 + ... + 526053763.

It is an arithmetic number, because the mean of its divisors is an integer number (126252788400).

Almost surely, 2^503959046551 is an apocalyptic number.

503959046551 is a deficient number, since it is larger than the sum of its proper divisors (1052107049).

503959046551 is a wasteful number, since it uses less digits than its factorization.

503959046551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052107048.

The product of its (nonzero) digits is 3645000, while the sum is 52.

The spelling of 503959046551 in words is "five hundred three billion, nine hundred fifty-nine million, forty-six thousand, five hundred fifty-one".