20275873771 has 2 divisors, whose sum is σ = 20275873772. Its totient is φ = 20275873770.

The previous prime is 20275873759. The next prime is 20275873781. The reversal of 20275873771 is 17737857202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20275873771 - 2¹¹ = 20275871723 is a prime.

It is a super-2 number, since 2×20275873771² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20275873781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10137936885 + 10137936886.

It is an arithmetic number, because the mean of its divisors is an integer number (10137936886).

Almost surely, 2^20275873771 is an apocalyptic number.

20275873771 is a deficient number, since it is larger than the sum of its proper divisors (1).

20275873771 is an equidigital number, since it uses as much as digits as its factorization.

20275873771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152480, while the sum is 49.

The spelling of 20275873771 in words is "twenty billion, two hundred seventy-five million, eight hundred seventy-three thousand, seven hundred seventy-one".