22155240532 has 6 divisors (see below), whose sum is σ = 38771670938. Its totient is φ = 11077620264.

The previous prime is 22155240473. The next prime is 22155240539. The reversal of 22155240532 is 23504255122.

It can be written as a sum of positive squares in only one way, i.e., 19702613956 + 2452626576 = 140366^2 + 49524^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22155240494 and 22155240503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22155240539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2769405063 + ... + 2769405070.

Almost surely, 2^22155240532 is an apocalyptic number.

It is an amenable number.

22155240532 is a deficient number, since it is larger than the sum of its proper divisors (16616430406).

22155240532 is a wasteful number, since it uses less digits than its factorization.

22155240532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5538810137 (or 5538810135 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 22155240532 its reverse (23504255122), we get a palindrome (45659495654).

The spelling of 22155240532 in words is "twenty-two billion, one hundred fifty-five million, two hundred forty thousand, five hundred thirty-two".