50478289999 has 2 divisors, whose sum is σ = 50478290000. Its totient is φ = 50478289998.

The previous prime is 50478289993. The next prime is 50478290053. The reversal of 50478289999 is 99998287405.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50478289999 - 2³¹ = 48330806351 is a prime.

It is a super-2 number, since 2×50478289999² (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 (50478289993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25239144999 + 25239145000.

It is an arithmetic number, because the mean of its divisors is an integer number (25239145000).

Almost surely, 2^50478289999 is an apocalyptic number.

50478289999 is a deficient number, since it is larger than the sum of its proper divisors (1).

50478289999 is an equidigital number, since it uses as much as digits as its factorization.

50478289999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 117573120, while the sum is 70.

The spelling of 50478289999 in words is "fifty billion, four hundred seventy-eight million, two hundred eighty-nine thousand, nine hundred ninety-nine".