22177009457 has 2 divisors, whose sum is σ = 22177009458. Its totient is φ = 22177009456.

The previous prime is 22177009433. The next prime is 22177009471. The reversal of 22177009457 is 75490077122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15040814881 + 7136194576 = 122641^2 + 84476^2 .

It is a cyclic number.

It is not a de Polignac number, because 22177009457 - 2¹⁴ = 22176993073 is a prime.

It is not a weakly prime, because it can be changed into another prime (22177009487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11088504728 + 11088504729.

It is an arithmetic number, because the mean of its divisors is an integer number (11088504729).

Almost surely, 2^22177009457 is an apocalyptic number.

It is an amenable number.

22177009457 is a deficient number, since it is larger than the sum of its proper divisors (1).

22177009457 is an equidigital number, since it uses as much as digits as its factorization.

22177009457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 246960, while the sum is 44.

The spelling of 22177009457 in words is "twenty-two billion, one hundred seventy-seven million, nine thousand, four hundred fifty-seven".