642612662204 has 6 divisors (see below), whose sum is σ = 1124572158864. Its totient is φ = 321306331100.

The previous prime is 642612662201. The next prime is 642612662233. The reversal of 642612662204 is 402266216246.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642612662201) 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 as a sum of consecutive naturals, namely, 80326582772 + ... + 80326582779.

It is an arithmetic number, because the mean of its divisors is an integer number (187428693144).

Almost surely, 2^642612662204 is an apocalyptic number.

It is an amenable number.

642612662204 is a deficient number, since it is larger than the sum of its proper divisors (481959496660).

642612662204 is a wasteful number, since it uses less digits than its factorization.

642612662204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160653165555 (or 160653165553 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 642612662204 in words is "six hundred forty-two billion, six hundred twelve million, six hundred sixty-two thousand, two hundred four".