20880250451 has 2 divisors, whose sum is σ = 20880250452. Its totient is φ = 20880250450.

The previous prime is 20880250429. The next prime is 20880250483. The reversal of 20880250451 is 15405208802.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20880250451 - 2²² = 20876056147 is a prime.

It is not a weakly prime, because it can be changed into another prime (20880250151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10440125225 + 10440125226.

It is an arithmetic number, because the mean of its divisors is an integer number (10440125226).

Almost surely, 2^20880250451 is an apocalyptic number.

20880250451 is a deficient number, since it is larger than the sum of its proper divisors (1).

20880250451 is an equidigital number, since it uses as much as digits as its factorization.

20880250451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25600, while the sum is 35.

The spelling of 20880250451 in words is "twenty billion, eight hundred eighty million, two hundred fifty thousand, four hundred fifty-one".