642565080565246 has 16 divisors (see below), whose sum is σ = 982487775665520. Its totient is φ = 315128613572800.

The previous prime is 642565080565171. The next prime is 642565080565283.

642565080565246 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14864535631 + ... + 14864578858.

It is an arithmetic number, because the mean of its divisors is an integer number (61405485979095).

Almost surely, 2^{642565080565246} is an apocalyptic number.

642565080565246 is a deficient number, since it is larger than the sum of its proper divisors (339922695100274).

642565080565246 is a wasteful number, since it uses less digits than its factorization.

642565080565246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29729114699.

The product of its (nonzero) digits is 414720000, while the sum is 64.

The spelling of 642565080565246 in words is "six hundred forty-two trillion, five hundred sixty-five billion, eighty million, five hundred sixty-five thousand, two hundred forty-six".