21213611546039 has 16 divisors (see below), whose sum is σ = 23169497987616. Its totient is φ = 19262289715200.

The previous prime is 21213611546027. The next prime is 21213611546041. The reversal of 21213611546039 is 93064511631212.

It is a cyclic number.

It is not a de Polignac number, because 21213611546039 - 2⁴⁴ = 3621425501623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213611546059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 440814899 + ... + 440863019.

It is an arithmetic number, because the mean of its divisors is an integer number (1448093624226).

Almost surely, 2^{21213611546039} is an apocalyptic number.

21213611546039 is a deficient number, since it is larger than the sum of its proper divisors (1955886441577).

21213611546039 is a wasteful number, since it uses less digits than its factorization.

21213611546039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94706.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 21213611546039 in words is "twenty-one trillion, two hundred thirteen billion, six hundred eleven million, five hundred forty-six thousand, thirty-nine".