51120456364 has 12 divisors (see below), whose sum is σ = 89464796064. Its totient is φ = 25559086064.

The previous prime is 51120456341. The next prime is 51120456371. The reversal of 51120456364 is 46365402115.

It is a super-2 number, since 2×51120456364² (a number of 22 digits) contains 22 as substring.

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, 180532 + ... + 367195.

It is an arithmetic number, because the mean of its divisors is an integer number (7455399672).

Almost surely, 2^51120456364 is an apocalyptic number.

It is an amenable number.

51120456364 is a deficient number, since it is larger than the sum of its proper divisors (38344339700).

51120456364 is a wasteful number, since it uses less digits than its factorization.

51120456364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571064 (or 571062 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 51120456364 its reverse (46365402115), we get a palindrome (97485858479).

The spelling of 51120456364 in words is "fifty-one billion, one hundred twenty million, four hundred fifty-six thousand, three hundred sixty-four".