51223667193 has 20 divisors (see below), whose sum is σ = 76548087220. Its totient is φ = 34136266752.

The previous prime is 51223667141. The next prime is 51223667203. The reversal of 51223667193 is 39176632215.

51223667193 is a `hidden beast` number, since 512 + 2 + 3 + 66 + 71 + 9 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15665776569 + 35557890624 = 125163^2 + 188568^2 .

It is not a de Polignac number, because 51223667193 - 2¹⁸ = 51223405049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51223667123) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 100221 + ... + 335397.

It is an arithmetic number, because the mean of its divisors is an integer number (3827404361).

Almost surely, 2^51223667193 is an apocalyptic number.

It is an amenable number.

51223667193 is a deficient number, since it is larger than the sum of its proper divisors (25324420027).

51223667193 is a wasteful number, since it uses less digits than its factorization.

51223667193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237878 (or 237869 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The spelling of 51223667193 in words is "fifty-one billion, two hundred twenty-three million, six hundred sixty-seven thousand, one hundred ninety-three".