20409624127 has 2 divisors, whose sum is σ = 20409624128. Its totient is φ = 20409624126.

The previous prime is 20409624119. The next prime is 20409624203. The reversal of 20409624127 is 72142690402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20409624127 - 2³ = 20409624119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20409624827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10204812063 + 10204812064.

It is an arithmetic number, because the mean of its divisors is an integer number (10204812064).

Almost surely, 2^20409624127 is an apocalyptic number.

20409624127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20409624127 is an equidigital number, since it uses as much as digits as its factorization.

20409624127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 20409624127 in words is "twenty billion, four hundred nine million, six hundred twenty-four thousand, one hundred twenty-seven".