51379842887 has 2 divisors, whose sum is σ = 51379842888. Its totient is φ = 51379842886.

The previous prime is 51379842863. The next prime is 51379842923. The reversal of 51379842887 is 78824897315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51379842887 - 2³⁰ = 50306101063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51379842827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25689921443 + 25689921444.

It is an arithmetic number, because the mean of its divisors is an integer number (25689921444).

Almost surely, 2^51379842887 is an apocalyptic number.

51379842887 is a deficient number, since it is larger than the sum of its proper divisors (1).

51379842887 is an equidigital number, since it uses as much as digits as its factorization.

51379842887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27095040, while the sum is 62.

The spelling of 51379842887 in words is "fifty-one billion, three hundred seventy-nine million, eight hundred forty-two thousand, eight hundred eighty-seven".