16139117061 has 24 divisors (see below), whose sum is σ = 23954354424. Its totient is φ = 10463264640.

The previous prime is 16139117051. The next prime is 16139117081. The reversal of 16139117061 is 16071193161.

16139117061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8033716161 + 8105400900 = 89631^2 + 90030^2 .

It is not a de Polignac number, because 16139117061 - 2²² = 16134922757 is a prime.

It is a super-2 number, since 2×16139117061² (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 (16139117051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 701635 + ... + 724271.

It is an arithmetic number, because the mean of its divisors is an integer number (998098101).

Almost surely, 2^16139117061 is an apocalyptic number.

It is an amenable number.

16139117061 is a deficient number, since it is larger than the sum of its proper divisors (7815237363).

16139117061 is a wasteful number, since it uses less digits than its factorization.

16139117061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24821 (or 24818 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 36.

The spelling of 16139117061 in words is "sixteen billion, one hundred thirty-nine million, one hundred seventeen thousand, sixty-one".