68746745278 has 12 divisors (see below), whose sum is σ = 104577266808. Its totient is φ = 33887700420.

The previous prime is 68746745273. The next prime is 68746745293. The reversal of 68746745278 is 87254764786.

It is a super-2 number, since 2×68746745278² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68746745273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3113425 + ... + 3135427.

It is an arithmetic number, because the mean of its divisors is an integer number (8714772234).

Almost surely, 2^68746745278 is an apocalyptic number.

68746745278 is a deficient number, since it is larger than the sum of its proper divisors (35830521530).

68746745278 is an frugal number, since it uses more digits than its factorization.

68746745278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44079 (or 22076 counting only the distinct ones).

The product of its digits is 126443520, while the sum is 64.

The spelling of 68746745278 in words is "sixty-eight billion, seven hundred forty-six million, seven hundred forty-five thousand, two hundred seventy-eight".