10216763721 has 6 divisors (see below), whose sum is σ = 14757547610. Its totient is φ = 6811175808.

The previous prime is 10216763707. The next prime is 10216763723. The reversal of 10216763721 is 12736761201.

It is a happy number.

10216763721 is a `hidden beast` number, since 1 + 0 + 2 + 16 + 7 + 637 + 2 + 1 = 666.

10216763721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9738729225 + 478034496 = 98685^2 + 21864^2 .

It is not a de Polignac number, because 10216763721 - 2⁹ = 10216763209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10216763723) 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 5 ways as a sum of consecutive naturals, for example, 567597976 + ... + 567597993.

Almost surely, 2^10216763721 is an apocalyptic number.

It is an amenable number.

10216763721 is a deficient number, since it is larger than the sum of its proper divisors (4540783889).

10216763721 is a wasteful number, since it uses less digits than its factorization.

10216763721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135195975 (or 1135195972 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The spelling of 10216763721 in words is "ten billion, two hundred sixteen million, seven hundred sixty-three thousand, seven hundred twenty-one".