642461580013 has 8 divisors (see below), whose sum is σ = 701127465696. Its totient is φ = 583839075600.

The previous prime is 642461579983. The next prime is 642461580031. The reversal of 642461580013 is 310085164246.

It is a happy number.

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

It is not a de Polignac number, because 642461580013 - 2²⁵ = 642428025581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642461580113) 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 7 ways as a sum of consecutive naturals, for example, 10814343 + ... + 10873588.

It is an arithmetic number, because the mean of its divisors is an integer number (87640933212).

Almost surely, 2^642461580013 is an apocalyptic number.

It is an amenable number.

642461580013 is a deficient number, since it is larger than the sum of its proper divisors (58665885683).

642461580013 is a wasteful number, since it uses less digits than its factorization.

642461580013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21690635.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 642461580013 in words is "six hundred forty-two billion, four hundred sixty-one million, five hundred eighty thousand, thirteen".