22771495493 has 2 divisors, whose sum is σ = 22771495494. Its totient is φ = 22771495492.

The previous prime is 22771495429. The next prime is 22771495511. The reversal of 22771495493 is 39459417722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19590761089 + 3180734404 = 139967^2 + 56398^2 .

It is a cyclic number.

It is not a de Polignac number, because 22771495493 - 2⁶ = 22771495429 is a prime.

It is a super-3 number, since 3×22771495493³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22771495403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11385747746 + 11385747747.

It is an arithmetic number, because the mean of its divisors is an integer number (11385747747).

Almost surely, 2^22771495493 is an apocalyptic number.

It is an amenable number.

22771495493 is a deficient number, since it is larger than the sum of its proper divisors (1).

22771495493 is an equidigital number, since it uses as much as digits as its factorization.

22771495493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 53.

The spelling of 22771495493 in words is "twenty-two billion, seven hundred seventy-one million, four hundred ninety-five thousand, four hundred ninety-three".