642604003613 has 32 divisors (see below), whose sum is σ = 764439645312. Its totient is φ = 532474675200.

The previous prime is 642604003549. The next prime is 642604003633. The reversal of 642604003613 is 316300406246.

It is not a de Polignac number, because 642604003613 - 2⁶ = 642604003549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642604003633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24686381 + ... + 24712397.

It is an arithmetic number, because the mean of its divisors is an integer number (23888738916).

Almost surely, 2^642604003613 is an apocalyptic number.

It is an amenable number.

642604003613 is a deficient number, since it is larger than the sum of its proper divisors (121835641699).

642604003613 is a wasteful number, since it uses less digits than its factorization.

642604003613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28205.

The product of its (nonzero) digits is 62208, while the sum is 35.

Adding to 642604003613 its reverse (316300406246), we get a palindrome (958904409859).

The spelling of 642604003613 in words is "six hundred forty-two billion, six hundred four million, three thousand, six hundred thirteen".