22452231556 has 6 divisors (see below), whose sum is σ = 39291405230. Its totient is φ = 11226115776.

The previous prime is 22452231547. The next prime is 22452231569. The reversal of 22452231556 is 65513225422.

It can be written as a sum of positive squares in only one way, i.e., 15050382400 + 7401849156 = 122680^2 + 86034^2 .

It is a super-2 number, since 2×22452231556² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2806528941 + ... + 2806528948.

Almost surely, 2^22452231556 is an apocalyptic number.

It is an amenable number.

22452231556 is a deficient number, since it is larger than the sum of its proper divisors (16839173674).

22452231556 is a wasteful number, since it uses less digits than its factorization.

22452231556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5613057893 (or 5613057891 counting only the distinct ones).

The product of its digits is 144000, while the sum is 37.

Adding to 22452231556 its reverse (65513225422), we get a palindrome (87965456978).

The spelling of 22452231556 in words is "twenty-two billion, four hundred fifty-two million, two hundred thirty-one thousand, five hundred fifty-six".