68433263779 has 4 divisors (see below), whose sum is σ = 68434430400. Its totient is φ = 68432097160.

The previous prime is 68433263741. The next prime is 68433263803. The reversal of 68433263779 is 97736233486.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68433263779 - 2¹³ = 68433255587 is a prime.

It is a super-2 number, since 2×68433263779² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68433266779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490387 + ... + 614284.

It is an arithmetic number, because the mean of its divisors is an integer number (17108607600).

Almost surely, 2^68433263779 is an apocalyptic number.

68433263779 is a deficient number, since it is larger than the sum of its proper divisors (1166621).

68433263779 is a wasteful number, since it uses less digits than its factorization.

68433263779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166620.

The product of its digits is 27433728, while the sum is 58.

The spelling of 68433263779 in words is "sixty-eight billion, four hundred thirty-three million, two hundred sixty-three thousand, seven hundred seventy-nine".