51986689147 has 2 divisors, whose sum is σ = 51986689148. Its totient is φ = 51986689146.

The previous prime is 51986689141. The next prime is 51986689151. The reversal of 51986689147 is 74198668915.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51986689147 - 2¹¹ = 51986687099 is a prime.

It is not a weakly prime, because it can be changed into another prime (51986689141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25993344573 + 25993344574.

It is an arithmetic number, because the mean of its divisors is an integer number (25993344574).

Almost surely, 2^51986689147 is an apocalyptic number.

51986689147 is a deficient number, since it is larger than the sum of its proper divisors (1).

51986689147 is an equidigital number, since it uses as much as digits as its factorization.

51986689147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26127360, while the sum is 64.

The spelling of 51986689147 in words is "fifty-one billion, nine hundred eighty-six million, six hundred eighty-nine thousand, one hundred forty-seven".