89146043891 has 2 divisors, whose sum is σ = 89146043892. Its totient is φ = 89146043890.

The previous prime is 89146043887. The next prime is 89146043941. The reversal of 89146043891 is 19834064198.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89146043891 - 2² = 89146043887 is a prime.

It is not a weakly prime, because it can be changed into another prime (89146543891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44573021945 + 44573021946.

It is an arithmetic number, because the mean of its divisors is an integer number (44573021946).

Almost surely, 2^89146043891 is an apocalyptic number.

89146043891 is a deficient number, since it is larger than the sum of its proper divisors (1).

89146043891 is an equidigital number, since it uses as much as digits as its factorization.

89146043891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 89146043891 in words is "eighty-nine billion, one hundred forty-six million, forty-three thousand, eight hundred ninety-one".