51442441245 has 24 divisors (see below), whose sum is σ = 96025891416. Its totient is φ = 25325509248.

The previous prime is 51442441199. The next prime is 51442441261. The reversal of 51442441245 is 54214424415.

51442441245 is a `hidden beast` number, since 51 + 442 + 44 + 124 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1659014361 + 49783426884 = 40731^2 + 223122^2 .

It is not a de Polignac number, because 51442441245 - 2⁷ = 51442441117 is a prime.

It is a super-2 number, since 2×51442441245² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43967314 + ... + 43968483.

It is an arithmetic number, because the mean of its divisors is an integer number (4001078809).

Almost surely, 2^51442441245 is an apocalyptic number.

It is an amenable number.

51442441245 is a deficient number, since it is larger than the sum of its proper divisors (44583450171).

51442441245 is a wasteful number, since it uses less digits than its factorization.

51442441245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87935821 (or 87935818 counting only the distinct ones).

The product of its digits is 102400, while the sum is 36.

The spelling of 51442441245 in words is "fifty-one billion, four hundred forty-two million, four hundred forty-one thousand, two hundred forty-five".