20440374611 has 2 divisors, whose sum is σ = 20440374612. Its totient is φ = 20440374610.

The previous prime is 20440374599. The next prime is 20440374631. The reversal of 20440374611 is 11647304402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20440374611 - 2²⁶ = 20373265747 is a prime.

It is not a weakly prime, because it can be changed into another prime (20440374631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10220187305 + 10220187306.

It is an arithmetic number, because the mean of its divisors is an integer number (10220187306).

Almost surely, 2^20440374611 is an apocalyptic number.

20440374611 is a deficient number, since it is larger than the sum of its proper divisors (1).

20440374611 is an equidigital number, since it uses as much as digits as its factorization.

20440374611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The spelling of 20440374611 in words is "twenty billion, four hundred forty million, three hundred seventy-four thousand, six hundred eleven".