8991896120903 has 2 divisors, whose sum is σ = 8991896120904. Its totient is φ = 8991896120902.

The previous prime is 8991896120899. The next prime is 8991896120993. The reversal of 8991896120903 is 3090216981998.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8991896120903 - 2² = 8991896120899 is a prime.

It is a super-2 number, since 2×8991896120903² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8991896120903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8991896120993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4495948060451 + 4495948060452.

It is an arithmetic number, because the mean of its divisors is an integer number (4495948060452).

Almost surely, 2^{8991896120903} is an apocalyptic number.

8991896120903 is a deficient number, since it is larger than the sum of its proper divisors (1).

8991896120903 is an equidigital number, since it uses as much as digits as its factorization.

8991896120903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15116544, while the sum is 65.

The spelling of 8991896120903 in words is "eight trillion, nine hundred ninety-one billion, eight hundred ninety-six million, one hundred twenty thousand, nine hundred three".