21413521514530 has 16 divisors (see below), whose sum is σ = 38555248594104. Its totient is φ = 8562984190720.

The previous prime is 21413521514471. The next prime is 21413521514549. The reversal of 21413521514530 is 3541512531412.

It can be written as a sum of positive squares in 4 ways, for example, as 16858997852841 + 4554523661689 = 4105971^2 + 2134133^2 .

It is a super-2 number, since 2×21413521514530² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21413521514530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303014791 + ... + 303085450.

Almost surely, 2^{21413521514530} is an apocalyptic number.

21413521514530 is a deficient number, since it is larger than the sum of its proper divisors (17141727079574).

21413521514530 is a wasteful number, since it uses less digits than its factorization.

21413521514530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606103781.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 21413521514530 in words is "twenty-one trillion, four hundred thirteen billion, five hundred twenty-one million, five hundred fourteen thousand, five hundred thirty".