921903116471 has 2 divisors, whose sum is σ = 921903116472. Its totient is φ = 921903116470.

The previous prime is 921903116441. The next prime is 921903116503. The reversal of 921903116471 is 174611309129.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 921903116471 - 2²² = 921898922167 is a prime.

It is a super-3 number, since 3×921903116471³ (a number of 37 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (921903116441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460951558235 + 460951558236.

It is an arithmetic number, because the mean of its divisors is an integer number (460951558236).

Almost surely, 2^921903116471 is an apocalyptic number.

921903116471 is a deficient number, since it is larger than the sum of its proper divisors (1).

921903116471 is an equidigital number, since it uses as much as digits as its factorization.

921903116471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 44.

The spelling of 921903116471 in words is "nine hundred twenty-one billion, nine hundred three million, one hundred sixteen thousand, four hundred seventy-one".