51303681544 has 16 divisors (see below), whose sum is σ = 97549254720. Its totient is φ = 25290546960.

The previous prime is 51303681509. The next prime is 51303681563. The reversal of 51303681544 is 44518630315.

It is a junction number, because it is equal to n+sod(n) for n = 51303681497 and 51303681506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45161124 + ... + 45162259.

It is an arithmetic number, because the mean of its divisors is an integer number (6096828420).

Almost surely, 2^51303681544 is an apocalyptic number.

It is an amenable number.

51303681544 is a deficient number, since it is larger than the sum of its proper divisors (46245573176).

51303681544 is a wasteful number, since it uses less digits than its factorization.

51303681544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90323460 (or 90323456 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 51303681544 in words is "fifty-one billion, three hundred three million, six hundred eighty-one thousand, five hundred forty-four".