642062275187 has 4 divisors (see below), whose sum is σ = 642074446896. Its totient is φ = 642050103480.

The previous prime is 642062275171. The next prime is 642062275223. The reversal of 642062275187 is 781572260246.

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

It is a cyclic number.

It is not a de Polignac number, because 642062275187 - 2⁴ = 642062275171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642062277187) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6006383 + ... + 6112344.

It is an arithmetic number, because the mean of its divisors is an integer number (160518611724).

Almost surely, 2^642062275187 is an apocalyptic number.

642062275187 is a deficient number, since it is larger than the sum of its proper divisors (12171709).

642062275187 is a wasteful number, since it uses less digits than its factorization.

642062275187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12171708.

The product of its (nonzero) digits is 2257920, while the sum is 50.

The spelling of 642062275187 in words is "six hundred forty-two billion, sixty-two million, two hundred seventy-five thousand, one hundred eighty-seven".