22312045544 has 8 divisors (see below), whose sum is σ = 41835085410. Its totient is φ = 11156022768.

The previous prime is 22312045537. The next prime is 22312045559. The reversal of 22312045544 is 44554021322.

It can be written as a sum of positive squares in only one way, i.e., 22162276900 + 149768644 = 148870^2 + 12238^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×22312045544³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22312045544.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1394502839 + ... + 1394502854.

Almost surely, 2^22312045544 is an apocalyptic number.

It is an amenable number.

22312045544 is a deficient number, since it is larger than the sum of its proper divisors (19523039866).

22312045544 is a wasteful number, since it uses less digits than its factorization.

22312045544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789005699 (or 2789005695 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 22312045544 its reverse (44554021322), we get a palindrome (66866066866).

The spelling of 22312045544 in words is "twenty-two billion, three hundred twelve million, forty-five thousand, five hundred forty-four".