51808034087 has 2 divisors, whose sum is σ = 51808034088. Its totient is φ = 51808034086.

The previous prime is 51808034051. The next prime is 51808034137. The reversal of 51808034087 is 78043080815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51808034087 - 2¹⁶ = 51807968551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51808031087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25904017043 + 25904017044.

It is an arithmetic number, because the mean of its divisors is an integer number (25904017044).

Almost surely, 2^51808034087 is an apocalyptic number.

51808034087 is a deficient number, since it is larger than the sum of its proper divisors (1).

51808034087 is an equidigital number, since it uses as much as digits as its factorization.

51808034087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 51808034087 in words is "fifty-one billion, eight hundred eight million, thirty-four thousand, eighty-seven".