16660375133274 has 128 divisors (see below), whose sum is σ = 37801694822400. Its totient is φ = 5437743917760.

The previous prime is 16660375133257. The next prime is 16660375133323. The reversal of 16660375133274 is 47233157306661.

It is a happy number.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16660375133274.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 481621719 + ... + 481656309.

It is an arithmetic number, because the mean of its divisors is an integer number (295325740800).

Almost surely, 2^{16660375133274} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16660375133274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18900847411200).

16660375133274 is an abundant number, since it is smaller than the sum of its proper divisors (21141319689126).

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

16660375133274 is a wasteful number, since it uses less digits than its factorization.

16660375133274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35465 (or 35459 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 54.

The spelling of 16660375133274 in words is "sixteen trillion, six hundred sixty billion, three hundred seventy-five million, one hundred thirty-three thousand, two hundred seventy-four".