22621527641 has 4 divisors (see below), whose sum is σ = 22694265984. Its totient is φ = 22548789300.

The previous prime is 22621527637. The next prime is 22621527673. The reversal of 22621527641 is 14672512622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14672512622 = 2 ⋅7336256311.

It is a cyclic number.

It is not a de Polignac number, because 22621527641 - 2² = 22621527637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22621527595 and 22621527604.

It is not an unprimeable number, because it can be changed into a prime (22621527611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36368705 + ... + 36369326.

It is an arithmetic number, because the mean of its divisors is an integer number (5673566496).

Almost surely, 2^22621527641 is an apocalyptic number.

It is an amenable number.

22621527641 is a deficient number, since it is larger than the sum of its proper divisors (72738343).

22621527641 is an equidigital number, since it uses as much as digits as its factorization.

22621527641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72738342.

The product of its digits is 80640, while the sum is 38.

The spelling of 22621527641 in words is "twenty-two billion, six hundred twenty-one million, five hundred twenty-seven thousand, six hundred forty-one".