51112412405 has 8 divisors (see below), whose sum is σ = 62830868184. Its totient is φ = 39892614400.

The previous prime is 51112412401. The next prime is 51112412413. The reversal of 51112412405 is 50421421115.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5711882929 + 45400529476 = 75577^2 + 213074^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51112412405 - 2² = 51112412401 is a prime.

It is a super-2 number, since 2×51112412405² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51112412401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124664216 + ... + 124664625.

It is an arithmetic number, because the mean of its divisors is an integer number (7853858523).

Almost surely, 2^51112412405 is an apocalyptic number.

It is an amenable number.

51112412405 is a deficient number, since it is larger than the sum of its proper divisors (11718455779).

51112412405 is a wasteful number, since it uses less digits than its factorization.

51112412405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249328887.

The product of its (nonzero) digits is 1600, while the sum is 26.

The spelling of 51112412405 in words is "fifty-one billion, one hundred twelve million, four hundred twelve thousand, four hundred five".