51168828404 has 24 divisors (see below), whose sum is σ = 90980543808. Its totient is φ = 25175767680.

The previous prime is 51168828401. The next prime is 51168828421. The reversal of 51168828404 is 40482886115.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51168828401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23717 + ... + 320780.

It is an arithmetic number, because the mean of its divisors is an integer number (3790855992).

Almost surely, 2^51168828404 is an apocalyptic number.

It is an amenable number.

51168828404 is a deficient number, since it is larger than the sum of its proper divisors (39811715404).

51168828404 is a wasteful number, since it uses less digits than its factorization.

51168828404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345095 (or 345093 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 47.

The spelling of 51168828404 in words is "fifty-one billion, one hundred sixty-eight million, eight hundred twenty-eight thousand, four hundred four".