196569767213639 has 2 divisors, whose sum is σ = 196569767213640. Its totient is φ = 196569767213638.

The previous prime is 196569767213591. The next prime is 196569767213693. The reversal of 196569767213639 is 936312767965691.

Together with next prime (196569767213693) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196569767213639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196569767216639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98284883606819 + 98284883606820.

It is an arithmetic number, because the mean of its divisors is an integer number (98284883606820).

Almost surely, 2^{196569767213639} is an apocalyptic number.

196569767213639 is a deficient number, since it is larger than the sum of its proper divisors (1).

196569767213639 is an equidigital number, since it uses as much as digits as its factorization.

196569767213639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4166497440, while the sum is 80.

The spelling of 196569767213639 in words is "one hundred ninety-six trillion, five hundred sixty-nine billion, seven hundred sixty-seven million, two hundred thirteen thousand, six hundred thirty-nine".