647042684041 has 16 divisors (see below), whose sum is σ = 697712275008. Its totient is φ = 596501611200.

The previous prime is 647042684023. The next prime is 647042684047. The reversal of 647042684041 is 140486240746.

It is a cyclic number.

It is not a de Polignac number, because 647042684041 - 2⁵ = 647042684009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 647042683982 and 647042684000.

It is not an unprimeable number, because it can be changed into a prime (647042684047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84126006 + ... + 84133696.

It is an arithmetic number, because the mean of its divisors is an integer number (43607017188).

Almost surely, 2^647042684041 is an apocalyptic number.

It is an amenable number.

647042684041 is a deficient number, since it is larger than the sum of its proper divisors (50669590967).

647042684041 is a wasteful number, since it uses less digits than its factorization.

647042684041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15192.

The product of its (nonzero) digits is 1032192, while the sum is 46.

The spelling of 647042684041 in words is "six hundred forty-seven billion, forty-two million, six hundred eighty-four thousand, forty-one".