51050050999 has 2 divisors, whose sum is σ = 51050051000. Its totient is φ = 51050050998.

The previous prime is 51050050993. The next prime is 51050051021. The reversal of 51050050999 is 99905005015.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51050050999 - 2²³ = 51041662391 is a prime.

It is a super-2 number, since 2×51050050999² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51050050993) 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, 25525025499 + 25525025500.

It is an arithmetic number, because the mean of its divisors is an integer number (25525025500).

Almost surely, 2^51050050999 is an apocalyptic number.

51050050999 is a deficient number, since it is larger than the sum of its proper divisors (1).

51050050999 is an equidigital number, since it uses as much as digits as its factorization.

51050050999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91125, while the sum is 43.

The spelling of 51050050999 in words is "fifty-one billion, fifty million, fifty thousand, nine hundred ninety-nine".