642914868846 has 8 divisors (see below), whose sum is σ = 1285829737704. Its totient is φ = 214304956280.

The previous prime is 642914868839. The next prime is 642914868853. The reversal of 642914868846 is 648868419246.

It is an interprime number because it is at equal distance from previous prime (642914868839) and next prime (642914868853).

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

642914868846 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53576239065 + ... + 53576239076.

It is an arithmetic number, because the mean of its divisors is an integer number (160728717213).

Almost surely, 2^642914868846 is an apocalyptic number.

642914868846 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

642914868846 is a wasteful number, since it uses less digits than its factorization.

642914868846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107152478146.

The product of its digits is 127401984, while the sum is 66.

The spelling of 642914868846 in words is "six hundred forty-two billion, nine hundred fourteen million, eight hundred sixty-eight thousand, eight hundred forty-six".