21713041451 has 2 divisors, whose sum is σ = 21713041452. Its totient is φ = 21713041450.

The previous prime is 21713041429. The next prime is 21713041517. The reversal of 21713041451 is 15414031712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21713041451 - 2²⁶ = 21645932587 is a prime.

It is not a weakly prime, because it can be changed into another prime (21713041351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10856520725 + 10856520726.

It is an arithmetic number, because the mean of its divisors is an integer number (10856520726).

Almost surely, 2^21713041451 is an apocalyptic number.

21713041451 is a deficient number, since it is larger than the sum of its proper divisors (1).

21713041451 is an equidigital number, since it uses as much as digits as its factorization.

21713041451 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 29.

The spelling of 21713041451 in words is "twenty-one billion, seven hundred thirteen million, forty-one thousand, four hundred fifty-one".