15135143133021 has 8 divisors (see below), whose sum is σ = 20233436731680. Its totient is φ = 10063472478192.

The previous prime is 15135143132999. The next prime is 15135143133083. The reversal of 15135143133021 is 12033134153151.

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

It is not a de Polignac number, because 15135143133021 - 2⁹ = 15135143132509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15135143133521) 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, 6655734630 + ... + 6655736903.

It is an arithmetic number, because the mean of its divisors is an integer number (2529179591460).

Almost surely, 2^{15135143133021} is an apocalyptic number.

It is an amenable number.

15135143133021 is a deficient number, since it is larger than the sum of its proper divisors (5098293598659).

15135143133021 is a wasteful number, since it uses less digits than its factorization.

15135143133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13311471915.

The product of its (nonzero) digits is 16200, while the sum is 33.

Adding to 15135143133021 its reverse (12033134153151), we get a palindrome (27168277286172).

The spelling of 15135143133021 in words is "fifteen trillion, one hundred thirty-five billion, one hundred forty-three million, one hundred thirty-three thousand, twenty-one".