20356504127 has 2 divisors, whose sum is σ = 20356504128. Its totient is φ = 20356504126.

The previous prime is 20356504111. The next prime is 20356504211. The reversal of 20356504127 is 72140565302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20356504127 - 2⁴ = 20356504111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20356504027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10178252063 + 10178252064.

It is an arithmetic number, because the mean of its divisors is an integer number (10178252064).

Almost surely, 2^20356504127 is an apocalyptic number.

20356504127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20356504127 is an equidigital number, since it uses as much as digits as its factorization.

20356504127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 35.

The spelling of 20356504127 in words is "twenty billion, three hundred fifty-six million, five hundred four thousand, one hundred twenty-seven".