89201668891 has 2 divisors, whose sum is σ = 89201668892. Its totient is φ = 89201668890.

The previous prime is 89201668877. The next prime is 89201668937. The reversal of 89201668891 is 19886610298.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89201668891 - 2³¹ = 87054185243 is a prime.

It is not a weakly prime, because it can be changed into another prime (89201668811) 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, 44600834445 + 44600834446.

It is an arithmetic number, because the mean of its divisors is an integer number (44600834446).

Almost surely, 2^89201668891 is an apocalyptic number.

89201668891 is a deficient number, since it is larger than the sum of its proper divisors (1).

89201668891 is an equidigital number, since it uses as much as digits as its factorization.

89201668891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2985984, while the sum is 58.

The spelling of 89201668891 in words is "eighty-nine billion, two hundred one million, six hundred sixty-eight thousand, eight hundred ninety-one".