51512442404 has 12 divisors (see below), whose sum is σ = 90440414064. Its totient is φ = 25672324104.

The previous prime is 51512442403. The next prime is 51512442431. The reversal of 51512442404 is 40424421515.

It is not an unprimeable number, because it can be changed into a prime (51512442403) 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, 20972894 + ... + 20975349.

It is an arithmetic number, because the mean of its divisors is an integer number (7536701172).

Almost surely, 2^51512442404 is an apocalyptic number.

It is an amenable number.

51512442404 is a deficient number, since it is larger than the sum of its proper divisors (38927971660).

51512442404 is a wasteful number, since it uses less digits than its factorization.

51512442404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41948554 (or 41948552 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

Adding to 51512442404 its reverse (40424421515), we get a palindrome (91936863919).

The spelling of 51512442404 in words is "fifty-one billion, five hundred twelve million, four hundred forty-two thousand, four hundred four".