51263456444 has 12 divisors (see below), whose sum is σ = 89722432800. Its totient is φ = 25628475648.

The previous prime is 51263456441. The next prime is 51263456449. The reversal of 51263456444 is 44465436215.

It is a junction number, because it is equal to n+sod(n) for n = 51263456395 and 51263456404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51263456441) 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, 777509 + ... + 840860.

It is an arithmetic number, because the mean of its divisors is an integer number (7476869400).

Almost surely, 2^51263456444 is an apocalyptic number.

It is an amenable number.

51263456444 is a deficient number, since it is larger than the sum of its proper divisors (38458976356).

51263456444 is a wasteful number, since it uses less digits than its factorization.

51263456444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626292 (or 1626290 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 44.

The spelling of 51263456444 in words is "fifty-one billion, two hundred sixty-three million, four hundred fifty-six thousand, four hundred forty-four".