16236118481 has 32 divisors (see below), whose sum is σ = 19339689600. Its totient is φ = 13461120000.

The previous prime is 16236118417. The next prime is 16236118489. The reversal of 16236118481 is 18481163261.

It is a cyclic number.

It is not a de Polignac number, because 16236118481 - 2⁶ = 16236118417 is a prime.

It is a super-2 number, since 2×16236118481² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16236118489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1731995 + ... + 1741343.

It is an arithmetic number, because the mean of its divisors is an integer number (604365300).

Almost surely, 2^16236118481 is an apocalyptic number.

16236118481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16236118481 is a deficient number, since it is larger than the sum of its proper divisors (3103571119).

16236118481 is a wasteful number, since it uses less digits than its factorization.

16236118481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9665.

The product of its digits is 55296, while the sum is 41.

The spelling of 16236118481 in words is "sixteen billion, two hundred thirty-six million, one hundred eighteen thousand, four hundred eighty-one".