22418263505 has 24 divisors (see below), whose sum is σ = 29862727272. Its totient is φ = 16142720000.

The previous prime is 22418263499. The next prime is 22418263513. The reversal of 22418263505 is 50536281422.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5524502929 + 16893760576 = 74327^2 + 129976^2 .

It is not a de Polignac number, because 22418263505 - 2¹⁰ = 22418262481 is a prime.

It is a super-2 number, since 2×22418263505² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122336 + ... + 244545.

It is an arithmetic number, because the mean of its divisors is an integer number (1244280303).

Almost surely, 2^22418263505 is an apocalyptic number.

It is an amenable number.

22418263505 is a deficient number, since it is larger than the sum of its proper divisors (7444463767).

22418263505 is a wasteful number, since it uses less digits than its factorization.

22418263505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367009 (or 366998 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 22418263505 in words is "twenty-two billion, four hundred eighteen million, two hundred sixty-three thousand, five hundred five".