38889220811 has 16 divisors (see below), whose sum is σ = 44802616320. Its totient is φ = 33065485440.

The previous prime is 38889220781. The next prime is 38889220817. The reversal of 38889220811 is 11802298883.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 38889220811 - 2²⁶ = 38822111947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38889220811.

It is not an unprimeable number, because it can be changed into a prime (38889220817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2649230 + ... + 2663868.

It is an arithmetic number, because the mean of its divisors is an integer number (2800163520).

Almost surely, 2^38889220811 is an apocalyptic number.

38889220811 is a deficient number, since it is larger than the sum of its proper divisors (5913395509).

38889220811 is a wasteful number, since it uses less digits than its factorization.

38889220811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17674.

The product of its (nonzero) digits is 442368, while the sum is 50.

The spelling of 38889220811 in words is "thirty-eight billion, eight hundred eighty-nine million, two hundred twenty thousand, eight hundred eleven".