20474420411 has 2 divisors, whose sum is σ = 20474420412. Its totient is φ = 20474420410.

The previous prime is 20474420377. The next prime is 20474420419. The reversal of 20474420411 is 11402447402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20474420411 is a prime.

It is not a weakly prime, because it can be changed into another prime (20474420419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10237210205 + 10237210206.

It is an arithmetic number, because the mean of its divisors is an integer number (10237210206).

Almost surely, 2^20474420411 is an apocalyptic number.

20474420411 is a deficient number, since it is larger than the sum of its proper divisors (1).

20474420411 is an equidigital number, since it uses as much as digits as its factorization.

20474420411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 29.

Adding to 20474420411 its reverse (11402447402), we get a palindrome (31876867813).

The spelling of 20474420411 in words is "twenty billion, four hundred seventy-four million, four hundred twenty thousand, four hundred eleven".