16138912959 has 40 divisors (see below), whose sum is σ = 26002764480. Its totient is φ = 9916530624.

The previous prime is 16138912919. The next prime is 16138912967. The reversal of 16138912959 is 95921983161.

16138912959 is a `hidden beast` number, since 1 + 613 + 8 + 9 + 12 + 9 + 5 + 9 = 666.

It is not a de Polignac number, because 16138912959 - 2⁷ = 16138912831 is a prime.

It is a super-2 number, since 2×16138912959² (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 (16138912919) 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 39 ways as a sum of consecutive naturals, for example, 701562 + ... + 724200.

It is an arithmetic number, because the mean of its divisors is an integer number (650069112).

Almost surely, 2^16138912959 is an apocalyptic number.

16138912959 is a deficient number, since it is larger than the sum of its proper divisors (9863851521).

16138912959 is a wasteful number, since it uses less digits than its factorization.

16138912959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23341 (or 23332 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 54.

The spelling of 16138912959 in words is "sixteen billion, one hundred thirty-eight million, nine hundred twelve thousand, nine hundred fifty-nine".