10816991613 has 16 divisors (see below), whose sum is σ = 16056676800. Its totient is φ = 7197150960.

The previous prime is 10816991611. The next prime is 10816991617. The reversal of 10816991613 is 31619961801.

10816991613 is a `hidden beast` number, since 10 + 8 + 16 + 9 + 9 + 1 + 613 = 666.

It is not a de Polignac number, because 10816991613 - 2¹ = 10816991611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10816991611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379803 + ... + 407288.

It is an arithmetic number, because the mean of its divisors is an integer number (1003542300).

Almost surely, 2^10816991613 is an apocalyptic number.

It is an amenable number.

10816991613 is a deficient number, since it is larger than the sum of its proper divisors (5239685187).

10816991613 is an equidigital number, since it uses as much as digits as its factorization.

10816991613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787609 (or 787603 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The spelling of 10816991613 in words is "ten billion, eight hundred sixteen million, nine hundred ninety-one thousand, six hundred thirteen".