642312011613 has 8 divisors (see below), whose sum is σ = 856462854208. Its totient is φ = 428184588384.

The previous prime is 642312011603. The next prime is 642312011617. The reversal of 642312011613 is 316110213246.

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

It is not a de Polignac number, because 642312011613 - 2⁸ = 642312011357 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 (642312011617) 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, 5790745 + ... + 5900622.

It is an arithmetic number, because the mean of its divisors is an integer number (107057856776).

Almost surely, 2^642312011613 is an apocalyptic number.

It is an amenable number.

642312011613 is a deficient number, since it is larger than the sum of its proper divisors (214150842595).

642312011613 is a wasteful number, since it uses less digits than its factorization.

642312011613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11709683.

The product of its (nonzero) digits is 5184, while the sum is 30.

Adding to 642312011613 its reverse (316110213246), we get a palindrome (958422224859).

The spelling of 642312011613 in words is "six hundred forty-two billion, three hundred twelve million, eleven thousand, six hundred thirteen".