68719477433 has 4 divisors (see below), whose sum is σ = 68878919808. Its totient is φ = 68560035060.

The previous prime is 68719477423. The next prime is 68719477483. The reversal of 68719477433 is 33477491786.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33477491786 = 2 ⋅16738745893.

It is a cyclic number.

It is not a de Polignac number, because 68719477433 - 2¹⁸ = 68719215289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68719477403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79720541 + ... + 79721402.

It is an arithmetic number, because the mean of its divisors is an integer number (17219729952).

Almost surely, 2^68719477433 is an apocalyptic number.

It is an amenable number.

68719477433 is a deficient number, since it is larger than the sum of its proper divisors (159442375).

68719477433 is a wasteful number, since it uses less digits than its factorization.

68719477433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159442374.

The product of its digits is 21337344, while the sum is 59.

The spelling of 68719477433 in words is "sixty-eight billion, seven hundred nineteen million, four hundred seventy-seven thousand, four hundred thirty-three".