21130331535153 has 6 divisors (see below), whose sum is σ = 30521589995234. Its totient is φ = 14086887690096.

The previous prime is 21130331535091. The next prime is 21130331535211. The reversal of 21130331535153 is 35153513303112.

21130331535153 is a `hidden beast` number, since 2 + 1 + 1 + 303 + 315 + 35 + 1 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19253289052449 + 1877042482704 = 4387857^2 + 1370052^2 .

It is not a de Polignac number, because 21130331535153 - 2³⁸ = 20855453628209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21130331535653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1173907307500 + ... + 1173907307517.

Almost surely, 2^{21130331535153} is an apocalyptic number.

It is an amenable number.

21130331535153 is a deficient number, since it is larger than the sum of its proper divisors (9391258460081).

21130331535153 is a wasteful number, since it uses less digits than its factorization.

21130331535153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347814615023 (or 2347814615020 counting only the distinct ones).

The product of its (nonzero) digits is 60750, while the sum is 36.

Adding to 21130331535153 its reverse (35153513303112), we get a palindrome (56283844838265).

The spelling of 21130331535153 in words is "twenty-one trillion, one hundred thirty billion, three hundred thirty-one million, five hundred thirty-five thousand, one hundred fifty-three".