22755346621 has 12 divisors (see below), whose sum is σ = 26833119132. Its totient is φ = 19237393728.

The previous prime is 22755346597. The next prime is 22755346643. The reversal of 22755346621 is 12664355722.

It can be written as a sum of positive squares in 2 ways, for example, as 19751210521 + 3004136100 = 140539^2 + 54810^2 .

It is not a de Polignac number, because 22755346621 - 2⁵ = 22755346589 is a prime.

It is a super-2 number, since 2×22755346621² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22755346721) 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, 3177210 + ... + 3184363.

It is an arithmetic number, because the mean of its divisors is an integer number (2236093261).

Almost surely, 2^22755346621 is an apocalyptic number.

It is an amenable number.

22755346621 is a deficient number, since it is larger than the sum of its proper divisors (4077772511).

22755346621 is an equidigital number, since it uses as much as digits as its factorization.

22755346621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6361660 (or 6361653 counting only the distinct ones).

The product of its digits is 604800, while the sum is 43.

The spelling of 22755346621 in words is "twenty-two billion, seven hundred fifty-five million, three hundred forty-six thousand, six hundred twenty-one".