10921724773 has 2 divisors, whose sum is σ = 10921724774. Its totient is φ = 10921724772.

The previous prime is 10921724767. The next prime is 10921724867. The reversal of 10921724773 is 37742712901.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10057482369 + 864242404 = 100287^2 + 29398^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10921724773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10921724573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5460862386 + 5460862387.

It is an arithmetic number, because the mean of its divisors is an integer number (5460862387).

Almost surely, 2^10921724773 is an apocalyptic number.

It is an amenable number.

10921724773 is a deficient number, since it is larger than the sum of its proper divisors (1).

10921724773 is an equidigital number, since it uses as much as digits as its factorization.

10921724773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 43.

The spelling of 10921724773 in words is "ten billion, nine hundred twenty-one million, seven hundred twenty-four thousand, seven hundred seventy-three".