21530355325035 has 32 divisors (see below), whose sum is σ = 34643072736000. Its totient is φ = 11418029045376.

The previous prime is 21530355324991. The next prime is 21530355325049. The reversal of 21530355325035 is 53052355303512.

It is not a de Polignac number, because 21530355325035 - 2¹⁵ = 21530355292267 is a prime.

It is a super-3 number, since 3×21530355325035³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46782676 + ... + 47240654.

It is an arithmetic number, because the mean of its divisors is an integer number (1082596023000).

Almost surely, 2^{21530355325035} is an apocalyptic number.

21530355325035 is a deficient number, since it is larger than the sum of its proper divisors (13112717410965).

21530355325035 is a wasteful number, since it uses less digits than its factorization.

21530355325035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475675.

The product of its (nonzero) digits is 1012500, while the sum is 42.

The spelling of 21530355325035 in words is "twenty-one trillion, five hundred thirty billion, three hundred fifty-five million, three hundred twenty-five thousand, thirty-five".