91998307411 has 2 divisors, whose sum is σ = 91998307412. Its totient is φ = 91998307410.

The previous prime is 91998307409. The next prime is 91998307481. The reversal of 91998307411 is 11470389919.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91998307411 - 2¹ = 91998307409 is a prime.

Together with 91998307409, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (91998307481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45999153705 + 45999153706.

It is an arithmetic number, because the mean of its divisors is an integer number (45999153706).

Almost surely, 2^91998307411 is an apocalyptic number.

91998307411 is a deficient number, since it is larger than the sum of its proper divisors (1).

91998307411 is an equidigital number, since it uses as much as digits as its factorization.

91998307411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 52.

The spelling of 91998307411 in words is "ninety-one billion, nine hundred ninety-eight million, three hundred seven thousand, four hundred eleven".