51969619133 has 2 divisors, whose sum is σ = 51969619134. Its totient is φ = 51969619132.

The previous prime is 51969619057. The next prime is 51969619153. The reversal of 51969619133 is 33191696915.

51969619133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37099767769 + 14869851364 = 192613^2 + 121942^2 .

It is a cyclic number.

It is not a de Polignac number, because 51969619133 - 2³⁰ = 50895877309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51969619153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25984809566 + 25984809567.

It is an arithmetic number, because the mean of its divisors is an integer number (25984809567).

Almost surely, 2^51969619133 is an apocalyptic number.

It is an amenable number.

51969619133 is a deficient number, since it is larger than the sum of its proper divisors (1).

51969619133 is an equidigital number, since it uses as much as digits as its factorization.

51969619133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1180980, while the sum is 53.

The spelling of 51969619133 in words is "fifty-one billion, nine hundred sixty-nine million, six hundred nineteen thousand, one hundred thirty-three".