10881617491 has 2 divisors, whose sum is σ = 10881617492. Its totient is φ = 10881617490.

The previous prime is 10881617459. The next prime is 10881617503. The reversal of 10881617491 is 19471618801.

It is a strong prime.

It is an emirp because it is prime and its reverse (19471618801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10881617491 - 2⁵ = 10881617459 is a prime.

It is not a weakly prime, because it can be changed into another prime (10881617441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5440808745 + 5440808746.

It is an arithmetic number, because the mean of its divisors is an integer number (5440808746).

Almost surely, 2^10881617491 is an apocalyptic number.

10881617491 is a deficient number, since it is larger than the sum of its proper divisors (1).

10881617491 is an equidigital number, since it uses as much as digits as its factorization.

10881617491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 46.

The spelling of 10881617491 in words is "ten billion, eight hundred eighty-one million, six hundred seventeen thousand, four hundred ninety-one".