20727126227447 has 2 divisors, whose sum is σ = 20727126227448. Its totient is φ = 20727126227446.

The previous prime is 20727126227443. The next prime is 20727126227503. The reversal of 20727126227447 is 74472262172702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20727126227447 - 2² = 20727126227443 is a prime.

It is a super-2 number, since 2×20727126227447² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20727126227441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10363563113723 + 10363563113724.

It is an arithmetic number, because the mean of its divisors is an integer number (10363563113724).

Almost surely, 2^{20727126227447} is an apocalyptic number.

20727126227447 is a deficient number, since it is larger than the sum of its proper divisors (1).

20727126227447 is an equidigital number, since it uses as much as digits as its factorization.

20727126227447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7375872, while the sum is 53.

The spelling of 20727126227447 in words is "twenty trillion, seven hundred twenty-seven billion, one hundred twenty-six million, two hundred twenty-seven thousand, four hundred forty-seven".