22651256363681 has 32 divisors (see below), whose sum is σ = 25768006557696. Its totient is φ = 19724520096000.

The previous prime is 22651256363609. The next prime is 22651256363683. The reversal of 22651256363681 is 18636365215622.

It is a cyclic number.

It is not a de Polignac number, because 22651256363681 - 2¹⁴ = 22651256347297 is a prime.

It is a super-2 number, since 2×22651256363681² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22651256363683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71035241 + ... + 71353401.

It is an arithmetic number, because the mean of its divisors is an integer number (805250204928).

Almost surely, 2^{22651256363681} is an apocalyptic number.

It is an amenable number.

22651256363681 is a deficient number, since it is larger than the sum of its proper divisors (3116750194015).

22651256363681 is a wasteful number, since it uses less digits than its factorization.

22651256363681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320333.

The product of its digits is 18662400, while the sum is 56.

The spelling of 22651256363681 in words is "twenty-two trillion, six hundred fifty-one billion, two hundred fifty-six million, three hundred sixty-three thousand, six hundred eighty-one".