84890699194867 has 2 divisors, whose sum is σ = 84890699194868. Its totient is φ = 84890699194866.

The previous prime is 84890699194823. The next prime is 84890699194979. The reversal of 84890699194867 is 76849199609848.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84890699194867 is a prime.

It is not a weakly prime, because it can be changed into another prime (84890699194267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42445349597433 + 42445349597434.

It is an arithmetic number, because the mean of its divisors is an integer number (42445349597434).

Almost surely, 2^{84890699194867} is an apocalyptic number.

84890699194867 is a deficient number, since it is larger than the sum of its proper divisors (1).

84890699194867 is an equidigital number, since it uses as much as digits as its factorization.

84890699194867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13544423424, while the sum is 88.

The spelling of 84890699194867 in words is "eighty-four trillion, eight hundred ninety billion, six hundred ninety-nine million, one hundred ninety-four thousand, eight hundred sixty-seven".