21652170060 has 48 divisors (see below), whose sum is σ = 60650343936. Its totient is φ = 5771600832.

The previous prime is 21652170053. The next prime is 21652170061. The reversal of 21652170060 is 6007125612.

It is a super-3 number, since 3×21652170060³ (a number of 32 digits) contains 333 as substring.

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 (21652170061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81627 + ... + 223533.

It is an arithmetic number, because the mean of its divisors is an integer number (1263548832).

Almost surely, 2^21652170060 is an apocalyptic number.

21652170060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21652170060 is an abundant number, since it is smaller than the sum of its proper divisors (38998173876).

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

21652170060 is a wasteful number, since it uses less digits than its factorization.

21652170060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144462 (or 144460 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

Adding to 21652170060 its reverse (6007125612), we get a palindrome (27659295672).

The spelling of 21652170060 in words is "twenty-one billion, six hundred fifty-two million, one hundred seventy thousand, sixty".