51381504711448 has 64 divisors (see below), whose sum is σ = 98631324691200. Its totient is φ = 25085966474880.

The previous prime is 51381504711389. The next prime is 51381504711479. The reversal of 51381504711448 is 84411740518315.

It is a junction number, because it is equal to n+sod(n) for n = 51381504711395 and 51381504711404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1706841565 + ... + 1706871667.

It is an arithmetic number, because the mean of its divisors is an integer number (1541114448300).

Almost surely, 2^{51381504711448} is an apocalyptic number.

It is an amenable number.

51381504711448 is a deficient number, since it is larger than the sum of its proper divisors (47249819979752).

51381504711448 is a wasteful number, since it uses less digits than its factorization.

51381504711448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55472 (or 55468 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 52.

The spelling of 51381504711448 in words is "fifty-one trillion, three hundred eighty-one billion, five hundred four million, seven hundred eleven thousand, four hundred forty-eight".