50454545991 has 16 divisors (see below), whose sum is σ = 68502392064. Its totient is φ = 33027096704.

The previous prime is 50454545957. The next prime is 50454546001. The reversal of 50454545991 is 19954545405.

It is a cyclic number.

It is not a de Polignac number, because 50454545991 - 2¹¹ = 50454543943 is a prime.

It is a super-2 number, since 2×50454545991² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50454545951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 659211 + ... + 731756.

It is an arithmetic number, because the mean of its divisors is an integer number (4281399504).

Almost surely, 2^50454545991 is an apocalyptic number.

50454545991 is a deficient number, since it is larger than the sum of its proper divisors (18047846073).

50454545991 is a wasteful number, since it uses less digits than its factorization.

50454545991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391190.

The product of its (nonzero) digits is 3240000, while the sum is 51.

The spelling of 50454545991 in words is "fifty billion, four hundred fifty-four million, five hundred forty-five thousand, nine hundred ninety-one".