20527642127 has 4 divisors (see below), whose sum is σ = 20550275496. Its totient is φ = 20505008760.

The previous prime is 20527642099. The next prime is 20527642129. The reversal of 20527642127 is 72124672502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20527642127 - 2¹⁴ = 20527625743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20527642129) 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 in 3 ways as a sum of consecutive naturals, for example, 11315324 + ... + 11317137.

It is an arithmetic number, because the mean of its divisors is an integer number (5137568874).

Almost surely, 2^20527642127 is an apocalyptic number.

20527642127 is a deficient number, since it is larger than the sum of its proper divisors (22633369).

20527642127 is an equidigital number, since it uses as much as digits as its factorization.

20527642127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22633368.

The product of its (nonzero) digits is 94080, while the sum is 38.

The spelling of 20527642127 in words is "twenty billion, five hundred twenty-seven million, six hundred forty-two thousand, one hundred twenty-seven".