20280526823 has 2 divisors, whose sum is σ = 20280526824. Its totient is φ = 20280526822.

The previous prime is 20280526787. The next prime is 20280526843. The reversal of 20280526823 is 32862508202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20280526823 - 2¹⁰ = 20280525799 is a prime.

It is a super-2 number, since 2×20280526823² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20280526843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10140263411 + 10140263412.

It is an arithmetic number, because the mean of its divisors is an integer number (10140263412).

Almost surely, 2^20280526823 is an apocalyptic number.

20280526823 is a deficient number, since it is larger than the sum of its proper divisors (1).

20280526823 is an equidigital number, since it uses as much as digits as its factorization.

20280526823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 20280526823 in words is "twenty billion, two hundred eighty million, five hundred twenty-six thousand, eight hundred twenty-three".