84694180667 has 2 divisors, whose sum is σ = 84694180668. Its totient is φ = 84694180666.

The previous prime is 84694180639. The next prime is 84694180679. The reversal of 84694180667 is 76608149648.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84694180667 - 2³⁴ = 67514311483 is a prime.

It is not a weakly prime, because it can be changed into another prime (84694180567) 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, 42347090333 + 42347090334.

It is an arithmetic number, because the mean of its divisors is an integer number (42347090334).

Almost surely, 2^84694180667 is an apocalyptic number.

84694180667 is a deficient number, since it is larger than the sum of its proper divisors (1).

84694180667 is an equidigital number, since it uses as much as digits as its factorization.

84694180667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13934592, while the sum is 59.

The spelling of 84694180667 in words is "eighty-four billion, six hundred ninety-four million, one hundred eighty thousand, six hundred sixty-seven".