869745978242 has 16 divisors (see below), whose sum is σ = 1373301302400. Its totient is φ = 411979483440.

The previous prime is 869745978203. The next prime is 869745978253. The reversal of 869745978242 is 242879547968.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5379767 + ... + 5539077.

It is an arithmetic number, because the mean of its divisors is an integer number (85831331400).

Almost surely, 2^869745978242 is an apocalyptic number.

869745978242 is a deficient number, since it is larger than the sum of its proper divisors (503555324158).

869745978242 is a wasteful number, since it uses less digits than its factorization.

869745978242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303001.

The product of its digits is 487710720, while the sum is 71.

The spelling of 869745978242 in words is "eight hundred sixty-nine billion, seven hundred forty-five million, nine hundred seventy-eight thousand, two hundred forty-two".