51604135199 has 2 divisors, whose sum is σ = 51604135200. Its totient is φ = 51604135198.

The previous prime is 51604135157. The next prime is 51604135207. The reversal of 51604135199 is 99153140615.

51604135199 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51604135199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51604135699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25802067599 + 25802067600.

It is an arithmetic number, because the mean of its divisors is an integer number (25802067600).

Almost surely, 2^51604135199 is an apocalyptic number.

51604135199 is a deficient number, since it is larger than the sum of its proper divisors (1).

51604135199 is an equidigital number, since it uses as much as digits as its factorization.

51604135199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145800, while the sum is 44.

The spelling of 51604135199 in words is "fifty-one billion, six hundred four million, one hundred thirty-five thousand, one hundred ninety-nine".