21514531144005 has 80 divisors (see below), whose sum is σ = 38725967960064. Its totient is φ = 11427078758400.

The previous prime is 21514531144003. The next prime is 21514531144013. The reversal of 21514531144005 is 50044113541512.

21514531144005 is a `hidden beast` number, since 2 + 1 + 51 + 453 + 114 + 40 + 0 + 5 = 666.

It is not a de Polignac number, because 21514531144005 - 2¹ = 21514531144003 is a prime.

It is a super-2 number, since 2×21514531144005² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21514531144003) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 489489780 + ... + 489533730.

Almost surely, 2^{21514531144005} is an apocalyptic number.

It is an amenable number.

21514531144005 is a deficient number, since it is larger than the sum of its proper divisors (17211436816059).

21514531144005 is a wasteful number, since it uses less digits than its factorization.

21514531144005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48928 (or 48919 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 21514531144005 its reverse (50044113541512), we get a palindrome (71558644685517).

The spelling of 21514531144005 in words is "twenty-one trillion, five hundred fourteen billion, five hundred thirty-one million, one hundred forty-four thousand, five".