67869561197 has 2 divisors, whose sum is σ = 67869561198. Its totient is φ = 67869561196.

The previous prime is 67869561167. The next prime is 67869561203. The reversal of 67869561197 is 79116596876.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67490324521 + 379236676 = 259789^2 + 19474^2 .

It is a cyclic number.

It is not a de Polignac number, because 67869561197 - 2¹² = 67869557101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67869561157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33934780598 + 33934780599.

It is an arithmetic number, because the mean of its divisors is an integer number (33934780599).

Almost surely, 2^67869561197 is an apocalyptic number.

It is an amenable number.

67869561197 is a deficient number, since it is larger than the sum of its proper divisors (1).

67869561197 is an equidigital number, since it uses as much as digits as its factorization.

67869561197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34292160, while the sum is 65.

The spelling of 67869561197 in words is "sixty-seven billion, eight hundred sixty-nine million, five hundred sixty-one thousand, one hundred ninety-seven".