51867599051 has 2 divisors, whose sum is σ = 51867599052. Its totient is φ = 51867599050.

The previous prime is 51867599041. The next prime is 51867599053. The reversal of 51867599051 is 15099576815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51867599051 - 2¹⁴ = 51867582667 is a prime.

It is a super-2 number, since 2×51867599051² (a number of 22 digits) contains 22 as substring.

Together with 51867599053, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51867599053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25933799525 + 25933799526.

It is an arithmetic number, because the mean of its divisors is an integer number (25933799526).

Almost surely, 2^51867599051 is an apocalyptic number.

51867599051 is a deficient number, since it is larger than the sum of its proper divisors (1).

51867599051 is an equidigital number, since it uses as much as digits as its factorization.

51867599051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402000, while the sum is 56.

The spelling of 51867599051 in words is "fifty-one billion, eight hundred sixty-seven million, five hundred ninety-nine thousand, fifty-one".