20423015027 has 2 divisors, whose sum is σ = 20423015028. Its totient is φ = 20423015026.

The previous prime is 20423015003. The next prime is 20423015069. The reversal of 20423015027 is 72051032402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20423015027 - 2⁸ = 20423014771 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20423014987 and 20423015005.

It is not a weakly prime, because it can be changed into another prime (20423015227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10211507513 + 10211507514.

It is an arithmetic number, because the mean of its divisors is an integer number (10211507514).

Almost surely, 2^20423015027 is an apocalyptic number.

20423015027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20423015027 is an equidigital number, since it uses as much as digits as its factorization.

20423015027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 26.

Adding to 20423015027 its reverse (72051032402), we get a palindrome (92474047429).

The spelling of 20423015027 in words is "twenty billion, four hundred twenty-three million, fifteen thousand, twenty-seven".