21439392526036 has 48 divisors (see below), whose sum is σ = 39999905616384. Its totient is φ = 10031261816576.

The previous prime is 21439392526031. The next prime is 21439392526039. The reversal of 21439392526036 is 63062529393412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21439392526031) 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, 9311346 + ... + 11383318.

It is an arithmetic number, because the mean of its divisors is an integer number (833331367008).

Almost surely, 2^{21439392526036} is an apocalyptic number.

It is an amenable number.

21439392526036 is a deficient number, since it is larger than the sum of its proper divisors (18560513090348).

21439392526036 is a wasteful number, since it uses less digits than its factorization.

21439392526036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074440 (or 2074438 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 55.

The spelling of 21439392526036 in words is "twenty-one trillion, four hundred thirty-nine billion, three hundred ninety-two million, five hundred twenty-six thousand, thirty-six".