38779297782 has 8 divisors (see below), whose sum is σ = 77558595576. Its totient is φ = 12926432592.

The previous prime is 38779297741. The next prime is 38779297819. The reversal of 38779297782 is 28779297783.

It is a sphenic number, since it is the product of 3 distinct primes.

38779297782 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3231608143 + ... + 3231608154.

It is an arithmetic number, because the mean of its divisors is an integer number (9694824447).

Almost surely, 2^38779297782 is an apocalyptic number.

38779297782 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

38779297782 is a wasteful number, since it uses less digits than its factorization.

38779297782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6463216302.

The product of its digits is 149361408, while the sum is 69.

Subtracting from 38779297782 its reverse (28779297783), we obtain a palindrome (9999999999).

The spelling of 38779297782 in words is "thirty-eight billion, seven hundred seventy-nine million, two hundred ninety-seven thousand, seven hundred eighty-two".