20521530005141 has 8 divisors (see below), whose sum is σ = 22469732957568. Its totient is φ = 18587095272000.

The previous prime is 20521530005129. The next prime is 20521530005147. The reversal of 20521530005141 is 14150003512502.

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

It is a cyclic number.

It is not a de Polignac number, because 20521530005141 - 2¹⁰ = 20521530004117 is a prime.

It is a super-2 number, since 2×20521530005141² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20521530005147) 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, 3442051700 + ... + 3442057661.

It is an arithmetic number, because the mean of its divisors is an integer number (2808716619696).

Almost surely, 2^{20521530005141} is an apocalyptic number.

It is an amenable number.

20521530005141 is a deficient number, since it is larger than the sum of its proper divisors (1948202952427).

20521530005141 is a wasteful number, since it uses less digits than its factorization.

20521530005141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884109643.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 20521530005141 its reverse (14150003512502), we get a palindrome (34671533517643).

The spelling of 20521530005141 in words is "twenty trillion, five hundred twenty-one billion, five hundred thirty million, five thousand, one hundred forty-one".