21652348019 has 2 divisors, whose sum is σ = 21652348020. Its totient is φ = 21652348018.

The previous prime is 21652347971. The next prime is 21652348043. The reversal of 21652348019 is 91084325612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21652348019 - 2³² = 17357380723 is a prime.

It is a super-2 number, since 2×21652348019² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21652348049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10826174009 + 10826174010.

It is an arithmetic number, because the mean of its divisors is an integer number (10826174010).

Almost surely, 2^21652348019 is an apocalyptic number.

21652348019 is a deficient number, since it is larger than the sum of its proper divisors (1).

21652348019 is an equidigital number, since it uses as much as digits as its factorization.

21652348019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 21652348019 in words is "twenty-one billion, six hundred fifty-two million, three hundred forty-eight thousand, nineteen".