21766960610 has 64 divisors (see below), whose sum is σ = 40848261120. Its totient is φ = 8346024960.

The previous prime is 21766960601. The next prime is 21766960619. The reversal of 21766960610 is 1606966712.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21766960601) and next prime (21766960619).

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (21766960619) 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 31 ways as a sum of consecutive naturals, for example, 4249631 + ... + 4254749.

It is an arithmetic number, because the mean of its divisors is an integer number (638254080).

Almost surely, 2^21766960610 is an apocalyptic number.

21766960610 is a deficient number, since it is larger than the sum of its proper divisors (19081300510).

21766960610 is a wasteful number, since it uses less digits than its factorization.

21766960610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5363.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 21766960610 in words is "twenty-one billion, seven hundred sixty-six million, nine hundred sixty thousand, six hundred ten".