642432205565214 has 8 divisors (see below), whose sum is σ = 1284864411130440. Its totient is φ = 214144068521736.

The previous prime is 642432205565177. The next prime is 642432205565219. The reversal of 642432205565214 is 412565502234246.

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

642432205565214 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642432205565219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53536017130429 + ... + 53536017130440.

It is an arithmetic number, because the mean of its divisors is an integer number (160608051391305).

Almost surely, 2^{642432205565214} is an apocalyptic number.

642432205565214 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.

642432205565214 is a wasteful number, since it uses less digits than its factorization.

642432205565214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107072034260874.

The product of its (nonzero) digits is 13824000, while the sum is 51.

The spelling of 642432205565214 in words is "six hundred forty-two trillion, four hundred thirty-two billion, two hundred five million, five hundred sixty-five thousand, two hundred fourteen".