20026621441 has 4 divisors (see below), whose sum is σ = 20029228992. Its totient is φ = 20024013892.

The previous prime is 20026621361. The next prime is 20026621453. The reversal of 20026621441 is 14412662002.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20026621441 is a prime.

It is a super-2 number, since 2×20026621441² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20026627441) 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, 1292221 + ... + 1307626.

It is an arithmetic number, because the mean of its divisors is an integer number (5007307248).

Almost surely, 2^20026621441 is an apocalyptic number.

It is an amenable number.

20026621441 is a deficient number, since it is larger than the sum of its proper divisors (2607551).

20026621441 is an equidigital number, since it uses as much as digits as its factorization.

20026621441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2607550.

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 20026621441 in words is "twenty billion, twenty-six million, six hundred twenty-one thousand, four hundred forty-one".