51345131408 has 20 divisors (see below), whose sum is σ = 100240594608. Its totient is φ = 25476590880.

The previous prime is 51345131401. The next prime is 51345131429. The reversal of 51345131408 is 80413154315.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51345131401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12246266 + ... + 12250457.

Almost surely, 2^51345131408 is an apocalyptic number.

It is an amenable number.

51345131408 is a deficient number, since it is larger than the sum of its proper divisors (48895463200).

51345131408 is a wasteful number, since it uses less digits than its factorization.

51345131408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24496862 (or 24496856 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 51345131408 in words is "fifty-one billion, three hundred forty-five million, one hundred thirty-one thousand, four hundred eight".