660876284123 has 4 divisors (see below), whose sum is σ = 720955946328. Its totient is φ = 600796621920.

The previous prime is 660876284093. The next prime is 660876284149. The reversal of 660876284123 is 321482678066.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 660876284123 - 2¹² = 660876280027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660876284183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30039831086 + ... + 30039831107.

It is an arithmetic number, because the mean of its divisors is an integer number (180238986582).

Almost surely, 2^660876284123 is an apocalyptic number.

660876284123 is a deficient number, since it is larger than the sum of its proper divisors (60079662205).

660876284123 is a wasteful number, since it uses less digits than its factorization.

660876284123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60079662204.

The product of its (nonzero) digits is 4644864, while the sum is 53.

The spelling of 660876284123 in words is "six hundred sixty billion, eight hundred seventy-six million, two hundred eighty-four thousand, one hundred twenty-three".