2223818181497 has 12 divisors (see below), whose sum is σ = 2468563752228. Its totient is φ = 2001636516000.

The previous prime is 2223818181463. The next prime is 2223818181499. The reversal of 2223818181497 is 7941818183222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 997403687401 + 1226414494096 = 998701^2 + 1107436^2 .

It is not a de Polignac number, because 2223818181497 - 2⁶ = 2223818181433 is a prime.

It is a super-2 number, since 2×2223818181497² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2223818181499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90971258 + ... + 90995699.

It is an arithmetic number, because the mean of its divisors is an integer number (205713646019).

Almost surely, 2^{2223818181497} is an apocalyptic number.

It is an amenable number.

2223818181497 is a deficient number, since it is larger than the sum of its proper divisors (244745570731).

2223818181497 is a wasteful number, since it uses less digits than its factorization.

2223818181497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181967080 (or 181967069 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 56.

The spelling of 2223818181497 in words is "two trillion, two hundred twenty-three billion, eight hundred eighteen million, one hundred eighty-one thousand, four hundred ninety-seven".