21507460324219 has 2 divisors, whose sum is σ = 21507460324220. Its totient is φ = 21507460324218.

The previous prime is 21507460324159. The next prime is 21507460324313. The reversal of 21507460324219 is 91242306470512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21507460324219 - 2¹¹ = 21507460322171 is a prime.

It is a super-2 number, since 2×21507460324219² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21507460324319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10753730162109 + 10753730162110.

It is an arithmetic number, because the mean of its divisors is an integer number (10753730162110).

Almost surely, 2^{21507460324219} is an apocalyptic number.

21507460324219 is a deficient number, since it is larger than the sum of its proper divisors (1).

21507460324219 is an equidigital number, since it uses as much as digits as its factorization.

21507460324219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 21507460324219 in words is "twenty-one trillion, five hundred seven billion, four hundred sixty million, three hundred twenty-four thousand, two hundred nineteen".