20122628641 has 2 divisors, whose sum is σ = 20122628642. Its totient is φ = 20122628640.

The previous prime is 20122628633. The next prime is 20122628683. The reversal of 20122628641 is 14682622102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13532436241 + 6590192400 = 116329^2 + 81180^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122628641 - 2³ = 20122628633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20122628597 and 20122628606.

It is not a weakly prime, because it can be changed into another prime (20122628611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061314320 + 10061314321.

It is an arithmetic number, because the mean of its divisors is an integer number (10061314321).

Almost surely, 2^20122628641 is an apocalyptic number.

It is an amenable number.

20122628641 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122628641 is an equidigital number, since it uses as much as digits as its factorization.

20122628641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 20122628641 in words is "twenty billion, one hundred twenty-two million, six hundred twenty-eight thousand, six hundred forty-one".