10921724867 has 2 divisors, whose sum is σ = 10921724868. Its totient is φ = 10921724866.

The previous prime is 10921724773. The next prime is 10921724909. The reversal of 10921724867 is 76842712901.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10921724867 is a prime.

It is not a weakly prime, because it can be changed into another prime (10921724467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5460862433 + 5460862434.

It is an arithmetic number, because the mean of its divisors is an integer number (5460862434).

Almost surely, 2^10921724867 is an apocalyptic number.

10921724867 is a deficient number, since it is larger than the sum of its proper divisors (1).

10921724867 is an equidigital number, since it uses as much as digits as its factorization.

10921724867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 47.

The spelling of 10921724867 in words is "ten billion, nine hundred twenty-one million, seven hundred twenty-four thousand, eight hundred sixty-seven".