647234744542 has 16 divisors (see below), whose sum is σ = 973560596400. Its totient is φ = 322715090880.

The previous prime is 647234744509. The next prime is 647234744647. The reversal of 647234744542 is 245447432746.

647234744542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 647234744542.

It is a congruent number.

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, 2269492 + ... + 2538712.

It is an arithmetic number, because the mean of its divisors is an integer number (60847537275).

Almost surely, 2^647234744542 is an apocalyptic number.

647234744542 is a deficient number, since it is larger than the sum of its proper divisors (326325851858).

647234744542 is a wasteful number, since it uses less digits than its factorization.

647234744542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272571.

The product of its digits is 18063360, while the sum is 52.

The spelling of 647234744542 in words is "six hundred forty-seven billion, two hundred thirty-four million, seven hundred forty-four thousand, five hundred forty-two".