921093863268851 has 2 divisors, whose sum is σ = 921093863268852. Its totient is φ = 921093863268850.

The previous prime is 921093863268841. The next prime is 921093863268923. The reversal of 921093863268851 is 158862368390129.

921093863268851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-921093863268851 is a prime.

It is not a weakly prime, because it can be changed into another prime (921093863268841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460546931634425 + 460546931634426.

It is an arithmetic number, because the mean of its divisors is an integer number (460546931634426).

Almost surely, 2^{921093863268851} is an apocalyptic number.

921093863268851 is a deficient number, since it is larger than the sum of its proper divisors (1).

921093863268851 is an equidigital number, since it uses as much as digits as its factorization.

921093863268851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 268738560, while the sum is 71.

The spelling of 921093863268851 in words is "nine hundred twenty-one trillion, ninety-three billion, eight hundred sixty-three million, two hundred sixty-eight thousand, eight hundred fifty-one".