21703477041 has 15 divisors (see below), whose sum is σ = 32423224251. Its totient is φ = 14468100768.

The previous prime is 21703477021. The next prime is 21703477049. The reversal of 21703477041 is 14077430712.

The square root of 21703477041 is 147321.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6809715441 + 14893761600 = 82521^2 + 122040^2 .

It is not a de Polignac number, because 21703477041 - 2¹¹ = 21703474993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21703476987 and 21703477005.

It is not an unprimeable number, because it can be changed into a prime (21703477049) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1317705 + ... + 1334073.

Almost surely, 2^21703477041 is an apocalyptic number.

21703477041 is the 147321-st square number.

21703477041 is the 73661-st centered octagonal number.

It is an amenable number.

21703477041 is a deficient number, since it is larger than the sum of its proper divisors (10719747210).

21703477041 is an frugal number, since it uses more digits than its factorization.

21703477041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32750 (or 16372 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

Multiplying 21703477041 by its sum of digits (36), we get a square (781325173476 = 883926²).

The spelling of 21703477041 in words is "twenty-one billion, seven hundred three million, four hundred seventy-seven thousand, forty-one".