22038036481 has 4 divisors (see below), whose sum is σ = 22256234964. Its totient is φ = 21819838000.

The previous prime is 22038036467. The next prime is 22038036487. The reversal of 22038036481 is 18463083022.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20911762881 + 1126273600 = 144609^2 + 33560^2 .

It is not a de Polignac number, because 22038036481 - 2⁷ = 22038036353 is a prime.

It is a super-2 number, since 2×22038036481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22038036481.

It is not an unprimeable number, because it can be changed into a prime (22038036487) 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, 109099090 + ... + 109099291.

It is an arithmetic number, because the mean of its divisors is an integer number (5564058741).

Almost surely, 2^22038036481 is an apocalyptic number.

It is an amenable number.

22038036481 is a deficient number, since it is larger than the sum of its proper divisors (218198483).

22038036481 is a wasteful number, since it uses less digits than its factorization.

22038036481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218198482.

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 22038036481 in words is "twenty-two billion, thirty-eight million, thirty-six thousand, four hundred eighty-one".