4691321194639 has 2 divisors, whose sum is σ = 4691321194640. Its totient is φ = 4691321194638.

The previous prime is 4691321194631. The next prime is 4691321194673. The reversal of 4691321194639 is 9364911231964.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4691321194639 - 2³ = 4691321194631 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4691321194631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2345660597319 + 2345660597320.

It is an arithmetic number, because the mean of its divisors is an integer number (2345660597320).

Almost surely, 2^{4691321194639} is an apocalyptic number.

4691321194639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4691321194639 is an equidigital number, since it uses as much as digits as its factorization.

4691321194639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7558272, while the sum is 58.

The spelling of 4691321194639 in words is "four trillion, six hundred ninety-one billion, three hundred twenty-one million, one hundred ninety-four thousand, six hundred thirty-nine".