22756451345521 has 8 divisors (see below), whose sum is σ = 22880565789984. Its totient is φ = 22632602388000.

The previous prime is 22756451345503. The next prime is 22756451345539. The reversal of 22756451345521 is 12554315465722.

It is an interprime number because it is at equal distance from previous prime (22756451345503) and next prime (22756451345539).

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 22756451345521 - 2¹³ = 22756451337329 is a prime.

It is a super-2 number, since 2×22756451345521² (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 (22756451345821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66199836 + ... + 66542701.

It is an arithmetic number, because the mean of its divisors is an integer number (2860070723748).

Almost surely, 2^{22756451345521} is an apocalyptic number.

It is an amenable number.

22756451345521 is a deficient number, since it is larger than the sum of its proper divisors (124114444463).

22756451345521 is a wasteful number, since it uses less digits than its factorization.

22756451345521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132743471.

The product of its digits is 10080000, while the sum is 52.

The spelling of 22756451345521 in words is "twenty-two trillion, seven hundred fifty-six billion, four hundred fifty-one million, three hundred forty-five thousand, five hundred twenty-one".