67696199172881 has 2 divisors, whose sum is σ = 67696199172882. Its totient is φ = 67696199172880.

The previous prime is 67696199172859. The next prime is 67696199172941. The reversal of 67696199172881 is 18827199169676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54234755580625 + 13461443592256 = 7364425^2 + 3668984^2 .

It is a cyclic number.

It is not a de Polignac number, because 67696199172881 - 2²⁶ = 67696132064017 is a prime.

It is a super-2 number, since 2×67696199172881² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67696199172796 and 67696199172805.

It is not a weakly prime, because it can be changed into another prime (67696199972881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33848099586440 + 33848099586441.

It is an arithmetic number, because the mean of its divisors is an integer number (33848099586441).

Almost surely, 2^{67696199172881} is an apocalyptic number.

It is an amenable number.

67696199172881 is a deficient number, since it is larger than the sum of its proper divisors (1).

67696199172881 is an equidigital number, since it uses as much as digits as its factorization.

67696199172881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 987614208, while the sum is 80.

The spelling of 67696199172881 in words is "sixty-seven trillion, six hundred ninety-six billion, one hundred ninety-nine million, one hundred seventy-two thousand, eight hundred eighty-one".