20780827338 has 32 divisors (see below), whose sum is σ = 42042775680. Its totient is φ = 6846808320.

The previous prime is 20780827321. The next prime is 20780827343. The reversal of 20780827338 is 83372808702.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2434518 + ... + 2443038.

It is an arithmetic number, because the mean of its divisors is an integer number (1313836740).

Almost surely, 2^20780827338 is an apocalyptic number.

20780827338 is an abundant number, since it is smaller than the sum of its proper divisors (21261948342).

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

20780827338 is a wasteful number, since it uses less digits than its factorization.

20780827338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13182.

The product of its (nonzero) digits is 903168, while the sum is 48.

The spelling of 20780827338 in words is "twenty billion, seven hundred eighty million, eight hundred twenty-seven thousand, three hundred thirty-eight".