20927391223 has 2 divisors, whose sum is σ = 20927391224. Its totient is φ = 20927391222.

The previous prime is 20927391211. The next prime is 20927391259. The reversal of 20927391223 is 32219372902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20927391223 - 2¹³ = 20927383031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20927391263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10463695611 + 10463695612.

It is an arithmetic number, because the mean of its divisors is an integer number (10463695612).

Almost surely, 2^20927391223 is an apocalyptic number.

20927391223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20927391223 is an equidigital number, since it uses as much as digits as its factorization.

20927391223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 40.

The spelling of 20927391223 in words is "twenty billion, nine hundred twenty-seven million, three hundred ninety-one thousand, two hundred twenty-three".