21232465279 has 2 divisors, whose sum is σ = 21232465280. Its totient is φ = 21232465278.

The previous prime is 21232465273. The next prime is 21232465349. The reversal of 21232465279 is 97256423212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21232465279 - 2³ = 21232465271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21232465271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616232639 + 10616232640.

It is an arithmetic number, because the mean of its divisors is an integer number (10616232640).

Almost surely, 2^21232465279 is an apocalyptic number.

21232465279 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232465279 is an equidigital number, since it uses as much as digits as its factorization.

21232465279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 43.

The spelling of 21232465279 in words is "twenty-one billion, two hundred thirty-two million, four hundred sixty-five thousand, two hundred seventy-nine".