51446361133 has 4 divisors (see below), whose sum is σ = 51677062528. Its totient is φ = 51215659740.

The previous prime is 51446361103. The next prime is 51446361139. The reversal of 51446361133 is 33116364415.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33116364415 = 5 ⋅6623272883.

It is a cyclic number.

It is not a de Polignac number, because 51446361133 - 2⁵ = 51446361101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51446361092 and 51446361101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51446361139) 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, 115350363 + ... + 115350808.

It is an arithmetic number, because the mean of its divisors is an integer number (12919265632).

Almost surely, 2^51446361133 is an apocalyptic number.

It is an amenable number.

51446361133 is a deficient number, since it is larger than the sum of its proper divisors (230701395).

51446361133 is a wasteful number, since it uses less digits than its factorization.

51446361133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230701394.

The product of its digits is 77760, while the sum is 37.

The spelling of 51446361133 in words is "fifty-one billion, four hundred forty-six million, three hundred sixty-one thousand, one hundred thirty-three".