647515574242 has 16 divisors (see below), whose sum is σ = 1073120441472. Its totient is φ = 291464810560.

The previous prime is 647515574183. The next prime is 647515574257. The reversal of 647515574242 is 242475515746.

It is a self number, because there is not a number n which added to its sum of digits gives 647515574242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414011734 + ... + 414013297.

It is an arithmetic number, because the mean of its divisors is an integer number (67070027592).

Almost surely, 2^647515574242 is an apocalyptic number.

647515574242 is a deficient number, since it is larger than the sum of its proper divisors (425604867230).

647515574242 is a wasteful number, since it uses less digits than its factorization.

647515574242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828025073.

The product of its digits is 9408000, while the sum is 52.

The spelling of 647515574242 in words is "six hundred forty-seven billion, five hundred fifteen million, five hundred seventy-four thousand, two hundred forty-two".