51111045199 has 2 divisors, whose sum is σ = 51111045200. Its totient is φ = 51111045198.

The previous prime is 51111045191. The next prime is 51111045217. The reversal of 51111045199 is 99154011115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51111045199 - 2³ = 51111045191 is a prime.

It is a super-2 number, since 2×51111045199² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51111045191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25555522599 + 25555522600.

It is an arithmetic number, because the mean of its divisors is an integer number (25555522600).

Almost surely, 2^51111045199 is an apocalyptic number.

51111045199 is a deficient number, since it is larger than the sum of its proper divisors (1).

51111045199 is an equidigital number, since it uses as much as digits as its factorization.

51111045199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 37.

The spelling of 51111045199 in words is "fifty-one billion, one hundred eleven million, forty-five thousand, one hundred ninety-nine".