38780928911 has 4 divisors (see below), whose sum is σ = 38801927472. Its totient is φ = 38759930352.

The previous prime is 38780928883. The next prime is 38780928931. The reversal of 38780928911 is 11982908783.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38780928911 - 2⁶ = 38780928847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38780928931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10496510 + ... + 10500203.

It is an arithmetic number, because the mean of its divisors is an integer number (9700481868).

Almost surely, 2^38780928911 is an apocalyptic number.

38780928911 is a deficient number, since it is larger than the sum of its proper divisors (20998561).

38780928911 is a wasteful number, since it uses less digits than its factorization.

38780928911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20998560.

The product of its (nonzero) digits is 1741824, while the sum is 56.

The spelling of 38780928911 in words is "thirty-eight billion, seven hundred eighty million, nine hundred twenty-eight thousand, nine hundred eleven".