16599194136 has 128 divisors (see below), whose sum is σ = 53771520000. Its totient is φ = 4742605728.

The previous prime is 16599194123. The next prime is 16599194141. The reversal of 16599194136 is 63149199561.

It is a happy number.

16599194136 is a `hidden beast` number, since 1 + 6 + 599 + 1 + 9 + 41 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37936 + ... + 186111.

It is an arithmetic number, because the mean of its divisors is an integer number (420090000).

Almost surely, 2^16599194136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16599194136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26885760000).

16599194136 is an abundant number, since it is smaller than the sum of its proper divisors (37172325864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16599194136 is a wasteful number, since it uses less digits than its factorization.

16599194136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224083 (or 224059 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 54.

The spelling of 16599194136 in words is "sixteen billion, five hundred ninety-nine million, one hundred ninety-four thousand, one hundred thirty-six".