21640268624119 has 2 divisors, whose sum is σ = 21640268624120. Its totient is φ = 21640268624118.

The previous prime is 21640268624101. The next prime is 21640268624129. The reversal of 21640268624119 is 91142686204612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21640268624119 - 2⁷ = 21640268623991 is a prime.

It is a super-2 number, since 2×21640268624119² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21640268624129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10820134312059 + 10820134312060.

It is an arithmetic number, because the mean of its divisors is an integer number (10820134312060).

Almost surely, 2^{21640268624119} is an apocalyptic number.

21640268624119 is a deficient number, since it is larger than the sum of its proper divisors (1).

21640268624119 is an equidigital number, since it uses as much as digits as its factorization.

21640268624119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 21640268624119 in words is "twenty-one trillion, six hundred forty billion, two hundred sixty-eight million, six hundred twenty-four thousand, one hundred nineteen".