16115368871 has 18 divisors (see below), whose sum is σ = 19785055680. Its totient is φ = 13086149832.

The previous prime is 16115368861. The next prime is 16115368877. The reversal of 16115368871 is 17886351161.

It is a de Polignac number, because none of the positive numbers 2^k-16115368871 is a prime.

It is a super-2 number, since 2×16115368871² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16115368877) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 437831 + ... + 473208.

It is an arithmetic number, because the mean of its divisors is an integer number (1099169760).

Almost surely, 2^16115368871 is an apocalyptic number.

16115368871 is a deficient number, since it is larger than the sum of its proper divisors (3669686809).

16115368871 is an equidigital number, since it uses as much as digits as its factorization.

16115368871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911091 (or 911065 counting only the distinct ones).

The product of its digits is 241920, while the sum is 47.

The spelling of 16115368871 in words is "sixteen billion, one hundred fifteen million, three hundred sixty-eight thousand, eight hundred seventy-one".