39995226678 has 16 divisors (see below), whose sum is σ = 87262312896. Its totient is φ = 12119765640.

The previous prime is 39995226673. The next prime is 39995226679. The reversal of 39995226678 is 87662259993.

It is a Harshad number since it is a multiple of its sum of digits (66), and also a Moran number because the ratio is a prime number: 605988283 = 39995226678 / (3 + 9 + 9 + 9 + 5 + 2 + 2 + 6 + 6 + 7 + 8).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39995226671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302994076 + ... + 302994207.

It is an arithmetic number, because the mean of its divisors is an integer number (5453894556).

Almost surely, 2^39995226678 is an apocalyptic number.

39995226678 is an abundant number, since it is smaller than the sum of its proper divisors (47267086218).

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

39995226678 is a wasteful number, since it uses less digits than its factorization.

39995226678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605988299.

The product of its digits is 88179840, while the sum is 66.

The spelling of 39995226678 in words is "thirty-nine billion, nine hundred ninety-five million, two hundred twenty-six thousand, six hundred seventy-eight".