38822775521 has 2 divisors, whose sum is σ = 38822775522. Its totient is φ = 38822775520.

The previous prime is 38822775499. The next prime is 38822775583. The reversal of 38822775521 is 12557722883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34365744400 + 4457031121 = 185380^2 + 66761^2 .

It is a cyclic number.

It is not a de Polignac number, because 38822775521 - 2²⁶ = 38755666657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38822775521.

It is not a weakly prime, because it can be changed into another prime (38822795521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19411387760 + 19411387761.

It is an arithmetic number, because the mean of its divisors is an integer number (19411387761).

Almost surely, 2^38822775521 is an apocalyptic number.

It is an amenable number.

38822775521 is a deficient number, since it is larger than the sum of its proper divisors (1).

38822775521 is an equidigital number, since it uses as much as digits as its factorization.

38822775521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1881600, while the sum is 50.

The spelling of 38822775521 in words is "thirty-eight billion, eight hundred twenty-two million, seven hundred seventy-five thousand, five hundred twenty-one".