68889403543 has 2 divisors, whose sum is σ = 68889403544. Its totient is φ = 68889403542.

The previous prime is 68889403469. The next prime is 68889403547. The reversal of 68889403543 is 34530498886.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68889403543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68889403547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34444701771 + 34444701772.

It is an arithmetic number, because the mean of its divisors is an integer number (34444701772).

Almost surely, 2^68889403543 is an apocalyptic number.

68889403543 is a deficient number, since it is larger than the sum of its proper divisors (1).

68889403543 is an equidigital number, since it uses as much as digits as its factorization.

68889403543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19906560, while the sum is 58.

The spelling of 68889403543 in words is "sixty-eight billion, eight hundred eighty-nine million, four hundred three thousand, five hundred forty-three".