669709124080242 has 32 divisors (see below), whose sum is σ = 1343288816126208. Its totient is φ = 222591982373376.

The previous prime is 669709124080211. The next prime is 669709124080267. The reversal of 669709124080242 is 242080421907966.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83977503 + ... + 91605890.

It is an arithmetic number, because the mean of its divisors is an integer number (41977775503944).

Almost surely, 2^{669709124080242} is an apocalyptic number.

669709124080242 is an abundant number, since it is smaller than the sum of its proper divisors (673579692045966).

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

669709124080242 is a wasteful number, since it uses less digits than its factorization.

669709124080242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175585234.

The product of its (nonzero) digits is 20901888, while the sum is 60.

The spelling of 669709124080242 in words is "six hundred sixty-nine trillion, seven hundred nine billion, one hundred twenty-four million, eighty thousand, two hundred forty-two".