21052932443687 has 2 divisors, whose sum is σ = 21052932443688. Its totient is φ = 21052932443686.

The previous prime is 21052932443623. The next prime is 21052932443707. The reversal of 21052932443687 is 78634423925012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21052932443687 - 2⁶ = 21052932443623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21052932443087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10526466221843 + 10526466221844.

It is an arithmetic number, because the mean of its divisors is an integer number (10526466221844).

It is a 1-persistent number, because it is pandigital, but 2⋅21052932443687 = 42105864887374 is not.

Almost surely, 2^{21052932443687} is an apocalyptic number.

21052932443687 is a deficient number, since it is larger than the sum of its proper divisors (1).

21052932443687 is an equidigital number, since it uses as much as digits as its factorization.

21052932443687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17418240, while the sum is 56.

The spelling of 21052932443687 in words is "twenty-one trillion, fifty-two billion, nine hundred thirty-two million, four hundred forty-three thousand, six hundred eighty-seven".