16051853381891 has 16 divisors (see below), whose sum is σ = 17017906766400. Its totient is φ = 15088231968768.

The previous prime is 16051853381881. The next prime is 16051853381903. The reversal of 16051853381891 is 19818335815061.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16051853381891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16051853381891.

It is not an unprimeable number, because it can be changed into a prime (16051853381831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77803850 + ... + 78009888.

It is an arithmetic number, because the mean of its divisors is an integer number (1063619172900).

Almost surely, 2^{16051853381891} is an apocalyptic number.

16051853381891 is a deficient number, since it is larger than the sum of its proper divisors (966053384509).

16051853381891 is a wasteful number, since it uses less digits than its factorization.

16051853381891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211918.

The product of its (nonzero) digits is 6220800, while the sum is 59.

The spelling of 16051853381891 in words is "sixteen trillion, fifty-one billion, eight hundred fifty-three million, three hundred eighty-one thousand, eight hundred ninety-one".