51726267764 has 6 divisors (see below), whose sum is σ = 90520968594. Its totient is φ = 25863133880.

The previous prime is 51726267743. The next prime is 51726267779. The reversal of 51726267764 is 46776262715.

It can be written as a sum of positive squares in only one way, i.e., 51275979364 + 450288400 = 226442^2 + 21220^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6465783467 + ... + 6465783474.

It is an arithmetic number, because the mean of its divisors is an integer number (15086828099).

Almost surely, 2^51726267764 is an apocalyptic number.

It is an amenable number.

51726267764 is a deficient number, since it is larger than the sum of its proper divisors (38794700830).

51726267764 is a wasteful number, since it uses less digits than its factorization.

51726267764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12931566945 (or 12931566943 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 53.

The spelling of 51726267764 in words is "fifty-one billion, seven hundred twenty-six million, two hundred sixty-seven thousand, seven hundred sixty-four".