166442466463616 has 64 divisors (see below), whose sum is σ = 379023463236480. Its totient is φ = 71319378175488.

The previous prime is 166442466463601. The next prime is 166442466463631. The reversal of 166442466463616 is 616364664244661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (166442466463601) and next prime (166442466463631).

It is a tau number, because it is divible by the number of its divisors (64).

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, 12187346 + ... + 21941201.

It is an arithmetic number, because the mean of its divisors is an integer number (5922241613070).

Almost surely, 2^{166442466463616} is an apocalyptic number.

166442466463616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166442466463616 is an abundant number, since it is smaller than the sum of its proper divisors (212580996772864).

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

166442466463616 is an equidigital number, since it uses as much as digits as its factorization.

166442466463616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34134011 (or 34133999 counting only the distinct ones).

The product of its digits is 429981696, while the sum is 65.

The spelling of 166442466463616 in words is "one hundred sixty-six trillion, four hundred forty-two billion, four hundred sixty-six million, four hundred sixty-three thousand, six hundred sixteen".