21410712976 has 45 divisors (see below), whose sum is σ = 41929113891. Its totient is φ = 10591516416.

The previous prime is 21410712941. The next prime is 21410712977. The reversal of 21410712976 is 67921701412.

The square root of 21410712976 is 146324.

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

It can be written as a sum of positive squares in 4 ways, for example, as 5494367376 + 15916345600 = 74124^2 + 126160^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21410712977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 91891356 + ... + 91891588.

Almost surely, 2^21410712976 is an apocalyptic number.

21410712976 is the 146324-th square number.

It is an amenable number.

21410712976 is a deficient number, since it is larger than the sum of its proper divisors (20518400915).

21410712976 is an frugal number, since it uses more digits than its factorization.

21410712976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The spelling of 21410712976 in words is "twenty-one billion, four hundred ten million, seven hundred twelve thousand, nine hundred seventy-six".