166285078355 has 8 divisors (see below), whose sum is σ = 217682284464. Its totient is φ = 120934602400.

The previous prime is 166285078343. The next prime is 166285078361. The reversal of 166285078355 is 553870582661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166285078355 - 2⁶ = 166285078291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166285078355.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1511682476 + ... + 1511682585.

It is an arithmetic number, because the mean of its divisors is an integer number (27210285558).

Almost surely, 2^166285078355 is an apocalyptic number.

166285078355 is a deficient number, since it is larger than the sum of its proper divisors (51397206109).

166285078355 is a wasteful number, since it uses less digits than its factorization.

166285078355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023365077.

The product of its (nonzero) digits is 12096000, while the sum is 56.

The spelling of 166285078355 in words is "one hundred sixty-six billion, two hundred eighty-five million, seventy-eight thousand, three hundred fifty-five".