21513014104530 has 64 divisors (see below), whose sum is σ = 57520207503360. Its totient is φ = 5112907328256.

The previous prime is 21513014104513. The next prime is 21513014104537. The reversal of 21513014104530 is 3540141031512.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (21513014104537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 951050322 + ... + 951072941.

It is an arithmetic number, because the mean of its divisors is an integer number (898753242240).

Almost surely, 2^{21513014104530} is an apocalyptic number.

21513014104530 is an abundant number, since it is smaller than the sum of its proper divisors (36007193398830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21513014104530 is a wasteful number, since it uses less digits than its factorization.

21513014104530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902123315.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 21513014104530 in words is "twenty-one trillion, five hundred thirteen billion, fourteen million, one hundred four thousand, five hundred thirty".