21412520413439 has 8 divisors (see below), whose sum is σ = 21743047552128. Its totient is φ = 21082314959640.

The previous prime is 21412520413399. The next prime is 21412520413463. The reversal of 21412520413439 is 93431402521412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21412520413439 - 2³² = 21408225446143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21412520413396 and 21412520413405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21412520413469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80287067 + ... + 80553324.

It is an arithmetic number, because the mean of its divisors is an integer number (2717880944016).

Almost surely, 2^{21412520413439} is an apocalyptic number.

21412520413439 is a deficient number, since it is larger than the sum of its proper divisors (330527138689).

21412520413439 is a wasteful number, since it uses less digits than its factorization.

21412520413439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160842445.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 21412520413439 in words is "twenty-one trillion, four hundred twelve billion, five hundred twenty million, four hundred thirteen thousand, four hundred thirty-nine".