22140661300465 has 8 divisors (see below), whose sum is σ = 26747107612200. Its totient is φ = 17593653005952.

The previous prime is 22140661300393. The next prime is 22140661300487. The reversal of 22140661300465 is 56400316604122.

It can be written as a sum of positive squares in 4 ways, for example, as 1025836762896 + 21114824537569 = 1012836^2 + 4595087^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22140661300465 - 2¹³ = 22140661292273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14859503484 + ... + 14859504973.

It is an arithmetic number, because the mean of its divisors is an integer number (3343388451525).

Almost surely, 2^{22140661300465} is an apocalyptic number.

It is an amenable number.

22140661300465 is a deficient number, since it is larger than the sum of its proper divisors (4606446311735).

22140661300465 is a wasteful number, since it uses less digits than its factorization.

22140661300465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29719008611.

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 22140661300465 its reverse (56400316604122), we get a palindrome (78540977904587).

The spelling of 22140661300465 in words is "twenty-two trillion, one hundred forty billion, six hundred sixty-one million, three hundred thousand, four hundred sixty-five".