20113044451 has 2 divisors, whose sum is σ = 20113044452. Its totient is φ = 20113044450.

The previous prime is 20113044409. The next prime is 20113044467. The reversal of 20113044451 is 15444031102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20113044451 - 2¹¹ = 20113042403 is a prime.

It is not a weakly prime, because it can be changed into another prime (20113044251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056522225 + 10056522226.

It is an arithmetic number, because the mean of its divisors is an integer number (10056522226).

Almost surely, 2^20113044451 is an apocalyptic number.

20113044451 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113044451 is an equidigital number, since it uses as much as digits as its factorization.

20113044451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 20113044451 its reverse (15444031102), we get a palindrome (35557075553).

The spelling of 20113044451 in words is "twenty billion, one hundred thirteen million, forty-four thousand, four hundred fifty-one".