22640361164252 has 36 divisors (see below), whose sum is σ = 42906276256536. Its totient is φ = 10448554334400.

The previous prime is 22640361164137. The next prime is 22640361164257. The reversal of 22640361164252 is 25246116304622.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22640361164257) 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, 7071938 + ... + 9761814.

It is an arithmetic number, because the mean of its divisors is an integer number (1191841007126).

Almost surely, 2^{22640361164252} is an apocalyptic number.

It is an amenable number.

22640361164252 is a deficient number, since it is larger than the sum of its proper divisors (20265915092284).

22640361164252 is a wasteful number, since it uses less digits than its factorization.

22640361164252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702358 (or 2702343 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 44.

Adding to 22640361164252 its reverse (25246116304622), we get a palindrome (47886477468874).

The spelling of 22640361164252 in words is "twenty-two trillion, six hundred forty billion, three hundred sixty-one million, one hundred sixty-four thousand, two hundred fifty-two".