68719477434 has 16 divisors (see below), whose sum is σ = 145523599488. Its totient is φ = 21559051712.

The previous prime is 68719477423. The next prime is 68719477483. The reversal of 68719477434 is 43477491786.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 336860082 + ... + 336860285.

It is an arithmetic number, because the mean of its divisors is an integer number (9095224968).

Almost surely, 2^68719477434 is an apocalyptic number.

68719477434 is an abundant number, since it is smaller than the sum of its proper divisors (76804122054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68719477434 is a wasteful number, since it uses less digits than its factorization.

68719477434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673720389.

The product of its digits is 28449792, while the sum is 60.

The spelling of 68719477434 in words is "sixty-eight billion, seven hundred nineteen million, four hundred seventy-seven thousand, four hundred thirty-four".