16118626291 has 2 divisors, whose sum is σ = 16118626292. Its totient is φ = 16118626290.

The previous prime is 16118626267. The next prime is 16118626339. The reversal of 16118626291 is 19262681161.

It is a weak prime.

It is an emirp because it is prime and its reverse (19262681161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16118626291 - 2⁹ = 16118625779 is a prime.

It is a super-2 number, since 2×16118626291² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16118626201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8059313145 + 8059313146.

It is an arithmetic number, because the mean of its divisors is an integer number (8059313146).

Almost surely, 2^16118626291 is an apocalyptic number.

16118626291 is a deficient number, since it is larger than the sum of its proper divisors (1).

16118626291 is an equidigital number, since it uses as much as digits as its factorization.

16118626291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 43.

The spelling of 16118626291 in words is "sixteen billion, one hundred eighteen million, six hundred twenty-six thousand, two hundred ninety-one".