68600449604381 has 2 divisors, whose sum is σ = 68600449604382. Its totient is φ = 68600449604380.

The previous prime is 68600449604369. The next prime is 68600449604417. The reversal of 68600449604381 is 18340694400686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34565768698756 + 34034680905625 = 5879266^2 + 5833925^2 .

It is a cyclic number.

It is not a de Polignac number, because 68600449604381 - 2¹⁸ = 68600449342237 is a prime.

It is a super-2 number, since 2×68600449604381² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68600449604381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68600449604081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34300224802190 + 34300224802191.

It is an arithmetic number, because the mean of its divisors is an integer number (34300224802191).

Almost surely, 2^{68600449604381} is an apocalyptic number.

It is an amenable number.

68600449604381 is a deficient number, since it is larger than the sum of its proper divisors (1).

68600449604381 is an equidigital number, since it uses as much as digits as its factorization.

68600449604381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23887872, while the sum is 59.

The spelling of 68600449604381 in words is "sixty-eight trillion, six hundred billion, four hundred forty-nine million, six hundred four thousand, three hundred eighty-one".