51442927733 has 4 divisors (see below), whose sum is σ = 51444390348. Its totient is φ = 51441465120.

The previous prime is 51442927699. The next prime is 51442927799. The reversal of 51442927733 is 33772924415.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27664670929 + 23778256804 = 166327^2 + 154202^2 .

It is a cyclic number.

It is not a de Polignac number, because 51442927733 - 2¹⁰ = 51442926709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51442027733) 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, 677216 + ... + 749337.

It is an arithmetic number, because the mean of its divisors is an integer number (12861097587).

Almost surely, 2^51442927733 is an apocalyptic number.

It is an amenable number.

51442927733 is a deficient number, since it is larger than the sum of its proper divisors (1462615).

51442927733 is a wasteful number, since it uses less digits than its factorization.

51442927733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462614.

The product of its digits is 1270080, while the sum is 47.

The spelling of 51442927733 in words is "fifty-one billion, four hundred forty-two million, nine hundred twenty-seven thousand, seven hundred thirty-three".