42964817647 has 4 divisors (see below), whose sum is σ = 43149216240. Its totient is φ = 42780419056.

The previous prime is 42964817611. The next prime is 42964817659. The reversal of 42964817647 is 74671846924.

It is a happy number.

42964817647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42964817647 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42964817591 and 42964817600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42964817447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92198947 + ... + 92199412.

It is an arithmetic number, because the mean of its divisors is an integer number (10787304060).

Almost surely, 2^42964817647 is an apocalyptic number.

42964817647 is a deficient number, since it is larger than the sum of its proper divisors (184398593).

42964817647 is a wasteful number, since it uses less digits than its factorization.

42964817647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184398592.

The product of its digits is 16257024, while the sum is 58.

The spelling of 42964817647 in words is "forty-two billion, nine hundred sixty-four million, eight hundred seventeen thousand, six hundred forty-seven".