21533101325239 has 16 divisors (see below), whose sum is σ = 25906023489280. Its totient is φ = 17484485921280.

The previous prime is 21533101325231. The next prime is 21533101325243. The reversal of 21533101325239 is 93252310133512.

It is not a de Polignac number, because 21533101325239 - 2³ = 21533101325231 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 (21533101325231) 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, 2566122 + ... + 7046359.

It is an arithmetic number, because the mean of its divisors is an integer number (1619126468080).

Almost surely, 2^{21533101325239} is an apocalyptic number.

21533101325239 is a deficient number, since it is larger than the sum of its proper divisors (4372922164041).

21533101325239 is a wasteful number, since it uses less digits than its factorization.

21533101325239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9629350.

The product of its (nonzero) digits is 145800, while the sum is 40.

The spelling of 21533101325239 in words is "twenty-one trillion, five hundred thirty-three billion, one hundred one million, three hundred twenty-five thousand, two hundred thirty-nine".