63642257404466 has 64 divisors (see below), whose sum is σ = 106671840952320. Its totient is φ = 28275185756160.

The previous prime is 63642257404391. The next prime is 63642257404489. The reversal of 63642257404466 is 66440475224636.

63642257404466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 748769231 + ... + 748854221.

It is an arithmetic number, because the mean of its divisors is an integer number (1666747514880).

Almost surely, 2^{63642257404466} is an apocalyptic number.

63642257404466 is a deficient number, since it is larger than the sum of its proper divisors (43029583547854).

63642257404466 is a wasteful number, since it uses less digits than its factorization.

63642257404466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88011.

The product of its (nonzero) digits is 139345920, while the sum is 59.

The spelling of 63642257404466 in words is "sixty-three trillion, six hundred forty-two billion, two hundred fifty-seven million, four hundred four thousand, four hundred sixty-six".