20265106403 has 2 divisors, whose sum is σ = 20265106404. Its totient is φ = 20265106402.

The previous prime is 20265106397. The next prime is 20265106429. The reversal of 20265106403 is 30460156202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20265106403 - 2¹⁰ = 20265105379 is a prime.

It is not a weakly prime, because it can be changed into another prime (20265106483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10132553201 + 10132553202.

It is an arithmetic number, because the mean of its divisors is an integer number (10132553202).

Almost surely, 2^20265106403 is an apocalyptic number.

20265106403 is a deficient number, since it is larger than the sum of its proper divisors (1).

20265106403 is an equidigital number, since it uses as much as digits as its factorization.

20265106403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 20265106403 in words is "twenty billion, two hundred sixty-five million, one hundred six thousand, four hundred three".