51897611411 has 2 divisors, whose sum is σ = 51897611412. Its totient is φ = 51897611410.

The previous prime is 51897611399. The next prime is 51897611417. The reversal of 51897611411 is 11411679815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51897611411 - 2³⁰ = 50823869587 is a prime.

It is not a weakly prime, because it can be changed into another prime (51897611417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25948805705 + 25948805706.

It is an arithmetic number, because the mean of its divisors is an integer number (25948805706).

Almost surely, 2^51897611411 is an apocalyptic number.

51897611411 is a deficient number, since it is larger than the sum of its proper divisors (1).

51897611411 is an equidigital number, since it uses as much as digits as its factorization.

51897611411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 44.

The spelling of 51897611411 in words is "fifty-one billion, eight hundred ninety-seven million, six hundred eleven thousand, four hundred eleven".