16625135346066 has 128 divisors (see below), whose sum is σ = 39859383513600. Its totient is φ = 5106080229120.

The previous prime is 16625135346023. The next prime is 16625135346077. The reversal of 16625135346066 is 66064353152661.

16625135346066 is a `hidden beast` number, since 1 + 6 + 6 + 2 + 513 + 5 + 3 + 4 + 60 + 66 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2147668956 + ... + 2147676696.

It is an arithmetic number, because the mean of its divisors is an integer number (311401433700).

Almost surely, 2^{16625135346066} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16625135346066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19929691756800).

16625135346066 is an abundant number, since it is smaller than the sum of its proper divisors (23234248167534).

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

16625135346066 is a wasteful number, since it uses less digits than its factorization.

16625135346066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12961 (or 12955 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 54.

The spelling of 16625135346066 in words is "sixteen trillion, six hundred twenty-five billion, one hundred thirty-five million, three hundred forty-six thousand, sixty-six".