921903116353 has 2 divisors, whose sum is σ = 921903116354. Its totient is φ = 921903116352.

The previous prime is 921903116341. The next prime is 921903116389. The reversal of 921903116353 is 353611309129.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 883913987889 + 37989128464 = 940167^2 + 194908^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-921903116353 is a prime.

It is not a weakly prime, because it can be changed into another prime (921903116333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460951558176 + 460951558177.

It is an arithmetic number, because the mean of its divisors is an integer number (460951558177).

Almost surely, 2^921903116353 is an apocalyptic number.

It is an amenable number.

921903116353 is a deficient number, since it is larger than the sum of its proper divisors (1).

921903116353 is an equidigital number, since it uses as much as digits as its factorization.

921903116353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131220, while the sum is 43.

The spelling of 921903116353 in words is "nine hundred twenty-one billion, nine hundred three million, one hundred sixteen thousand, three hundred fifty-three".