21460477327 has 2 divisors, whose sum is σ = 21460477328. Its totient is φ = 21460477326.

The previous prime is 21460477279. The next prime is 21460477343. The reversal of 21460477327 is 72377406412.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21460477327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21460427327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10730238663 + 10730238664.

It is an arithmetic number, because the mean of its divisors is an integer number (10730238664).

Almost surely, 2^21460477327 is an apocalyptic number.

21460477327 is a deficient number, since it is larger than the sum of its proper divisors (1).

21460477327 is an equidigital number, since it uses as much as digits as its factorization.

21460477327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 395136, while the sum is 43.

The spelling of 21460477327 in words is "twenty-one billion, four hundred sixty million, four hundred seventy-seven thousand, three hundred twenty-seven".