20423270071 has 2 divisors, whose sum is σ = 20423270072. Its totient is φ = 20423270070.

The previous prime is 20423270047. The next prime is 20423270117. The reversal of 20423270071 is 17007232402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20423270071 - 2¹¹ = 20423268023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20423270011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10211635035 + 10211635036.

It is an arithmetic number, because the mean of its divisors is an integer number (10211635036).

Almost surely, 2^20423270071 is an apocalyptic number.

20423270071 is a deficient number, since it is larger than the sum of its proper divisors (1).

20423270071 is an equidigital number, since it uses as much as digits as its factorization.

20423270071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 28.

The spelling of 20423270071 in words is "twenty billion, four hundred twenty-three million, two hundred seventy thousand, seventy-one".