16000000000091 has 16 divisors (see below), whose sum is σ = 17262993715200. Its totient is φ = 14785933150560.

The previous prime is 16000000000003. The next prime is 16000000000139. The reversal of 16000000000091 is 19000000000061.

It is not a de Polignac number, because 16000000000091 - 2¹⁸ = 15999999737947 is a prime.

16000000000091 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

16000000000091 is a modest number, since divided by 91 gives 16 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 15999999999979 and 16000000000069.

It is not an unprimeable number, because it can be changed into a prime (16000000000891) 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, 18304460 + ... + 19158633.

It is an arithmetic number, because the mean of its divisors is an integer number (1078937107200).

Almost surely, 2^{16000000000091} is an apocalyptic number.

16000000000091 is a deficient number, since it is larger than the sum of its proper divisors (1262993715109).

16000000000091 is a wasteful number, since it uses less digits than its factorization.

16000000000091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37463746.

The product of its (nonzero) digits is 54, while the sum is 17.

The spelling of 16000000000091 in words is "sixteen trillion, ninety-one", and thus it is an aban number and an uban number.