642484707275 has 18 divisors (see below), whose sum is σ = 846301318740. Its totient is φ = 483753185920.

The previous prime is 642484707269. The next prime is 642484707287. The reversal of 642484707275 is 572707484246.

It is not a de Polignac number, because 642484707275 - 2¹⁴ = 642484690891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 642484707275.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 44455385 + ... + 44469834.

It is an arithmetic number, because the mean of its divisors is an integer number (47016739930).

Almost surely, 2^642484707275 is an apocalyptic number.

642484707275 is a deficient number, since it is larger than the sum of its proper divisors (203816611465).

642484707275 is a wasteful number, since it uses less digits than its factorization.

642484707275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88925263 (or 88925241 counting only the distinct ones).

The product of its (nonzero) digits is 21073920, while the sum is 56.

The spelling of 642484707275 in words is "six hundred forty-two billion, four hundred eighty-four million, seven hundred seven thousand, two hundred seventy-five".