51021141191 has 2 divisors, whose sum is σ = 51021141192. Its totient is φ = 51021141190.

The previous prime is 51021141187. The next prime is 51021141221. The reversal of 51021141191 is 19114112015.

51021141191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51021141191 - 2² = 51021141187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51021141191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51021141121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25510570595 + 25510570596.

It is an arithmetic number, because the mean of its divisors is an integer number (25510570596).

Almost surely, 2^51021141191 is an apocalyptic number.

51021141191 is a deficient number, since it is larger than the sum of its proper divisors (1).

51021141191 is an equidigital number, since it uses as much as digits as its factorization.

51021141191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 26.

The spelling of 51021141191 in words is "fifty-one billion, twenty-one million, one hundred forty-one thousand, one hundred ninety-one".