21703241061 has 16 divisors (see below), whose sum is σ = 32155219200. Its totient is φ = 14467806144.

The previous prime is 21703241047. The next prime is 21703241123. The reversal of 21703241061 is 16014230712.

21703241061 is a `hidden beast` number, since 217 + 0 + 32 + 410 + 6 + 1 = 666.

It is not a de Polignac number, because 21703241061 - 2⁹ = 21703240549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21703243061) 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, 725380 + ... + 754706.

It is an arithmetic number, because the mean of its divisors is an integer number (2009701200).

Almost surely, 2^21703241061 is an apocalyptic number.

It is an amenable number.

21703241061 is a deficient number, since it is larger than the sum of its proper divisors (10451978139).

21703241061 is a wasteful number, since it uses less digits than its factorization.

21703241061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56745 (or 56739 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

Adding to 21703241061 its reverse (16014230712), we get a palindrome (37717471773).

The spelling of 21703241061 in words is "twenty-one billion, seven hundred three million, two hundred forty-one thousand, sixty-one".