51623446841 has 4 divisors (see below), whose sum is σ = 53018675172. Its totient is φ = 50228218512.

The previous prime is 51623446829. The next prime is 51623446843. The reversal of 51623446841 is 14864432615.

51623446841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14864432615 = 5 ⋅2972886523.

It can be written as a sum of positive squares in 2 ways, for example, as 43335165241 + 8288281600 = 208171^2 + 91040^2 .

It is a cyclic number.

It is not a de Polignac number, because 51623446841 - 2²² = 51619252537 is a prime.

It is a super-3 number, since 3×51623446841³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51623446792 and 51623446801.

It is not an unprimeable number, because it can be changed into a prime (51623446843) 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, 697614110 + ... + 697614183.

It is an arithmetic number, because the mean of its divisors is an integer number (13254668793).

Almost surely, 2^51623446841 is an apocalyptic number.

It is an amenable number.

51623446841 is a deficient number, since it is larger than the sum of its proper divisors (1395228331).

51623446841 is a wasteful number, since it uses less digits than its factorization.

51623446841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395228330.

The product of its digits is 552960, while the sum is 44.

The spelling of 51623446841 in words is "fifty-one billion, six hundred twenty-three million, four hundred forty-six thousand, eight hundred forty-one".