642574470873 has 8 divisors (see below), whose sum is σ = 856995119200. Its totient is φ = 428268401568.

The previous prime is 642574470871. The next prime is 642574470887. The reversal of 642574470873 is 378074475246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 642574470873 - 2¹ = 642574470871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642574470871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28631668 + ... + 28654101.

It is an arithmetic number, because the mean of its divisors is an integer number (107124389900).

Almost surely, 2^642574470873 is an apocalyptic number.

It is an amenable number.

642574470873 is a deficient number, since it is larger than the sum of its proper divisors (214420648327).

642574470873 is a wasteful number, since it uses less digits than its factorization.

642574470873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57289511.

The product of its (nonzero) digits is 31610880, while the sum is 57.

The spelling of 642574470873 in words is "six hundred forty-two billion, five hundred seventy-four million, four hundred seventy thousand, eight hundred seventy-three".