20123544527 has 2 divisors, whose sum is σ = 20123544528. Its totient is φ = 20123544526.

The previous prime is 20123544523. The next prime is 20123544607. The reversal of 20123544527 is 72544532102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20123544527 - 2² = 20123544523 is a prime.

It is a super-3 number, since 3×20123544527³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20123544523) 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, 10061772263 + 10061772264.

It is an arithmetic number, because the mean of its divisors is an integer number (10061772264).

Almost surely, 2^20123544527 is an apocalyptic number.

20123544527 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123544527 is an equidigital number, since it uses as much as digits as its factorization.

20123544527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 35.

The spelling of 20123544527 in words is "twenty billion, one hundred twenty-three million, five hundred forty-four thousand, five hundred twenty-seven".