10098916991 has 2 divisors, whose sum is σ = 10098916992. Its totient is φ = 10098916990.

The previous prime is 10098916987. The next prime is 10098917041. The reversal of 10098916991 is 19961989001.

It is a weak prime.

It is an emirp because it is prime and its reverse (19961989001) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 16691686001 and 10068619661.

It is a cyclic number.

It is not a de Polignac number, because 10098916991 - 2² = 10098916987 is a prime.

It is a super-2 number, since 2×10098916991² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10098916921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5049458495 + 5049458496.

It is an arithmetic number, because the mean of its divisors is an integer number (5049458496).

Almost surely, 2^10098916991 is an apocalyptic number.

10098916991 is a deficient number, since it is larger than the sum of its proper divisors (1).

10098916991 is an equidigital number, since it uses as much as digits as its factorization.

10098916991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 53.

The spelling of 10098916991 in words is "ten billion, ninety-eight million, nine hundred sixteen thousand, nine hundred ninety-one".