642603547000 has 128 divisors (see below), whose sum is σ = 1556384544000. Its totient is φ = 248043801600.

The previous prime is 642603546961. The next prime is 642603547009. The reversal of 642603547000 is 745306246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642603547009) 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 31 ways as a sum of consecutive naturals, for example, 66318156 + ... + 66327844.

It is an arithmetic number, because the mean of its divisors is an integer number (12159254250).

Almost surely, 2^642603547000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 642603547000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (778192272000).

642603547000 is an abundant number, since it is smaller than the sum of its proper divisors (913780997000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642603547000 is a wasteful number, since it uses less digits than its factorization.

642603547000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12026 (or 12012 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 37.

The spelling of 642603547000 in words is "six hundred forty-two billion, six hundred three million, five hundred forty-seven thousand".