642024358657 has 16 divisors (see below), whose sum is σ = 709564276800. Its totient is φ = 576054015040.

The previous prime is 642024358643. The next prime is 642024358667. The reversal of 642024358657 is 756853420246.

It is a cyclic number.

It is not a de Polignac number, because 642024358657 - 2²⁷ = 641890140929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642024358667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 697282 + ... + 1330507.

It is an arithmetic number, because the mean of its divisors is an integer number (44347767300).

Almost surely, 2^642024358657 is an apocalyptic number.

It is an amenable number.

642024358657 is a deficient number, since it is larger than the sum of its proper divisors (67539918143).

642024358657 is a wasteful number, since it uses less digits than its factorization.

642024358657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028176.

The product of its (nonzero) digits is 9676800, while the sum is 52.

The spelling of 642024358657 in words is "six hundred forty-two billion, twenty-four million, three hundred fifty-eight thousand, six hundred fifty-seven".