166404465206546 has 16 divisors (see below), whose sum is σ = 285268638076800. Its totient is φ = 71315239229280.

The previous prime is 166404465206417. The next prime is 166404465206669. The reversal of 166404465206546 is 645602564404661.

It is a super-3 number, since 3×166404465206546³ (a number of 44 digits) contains 333 as substring.

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, 78934571 + ... + 81015278.

It is an arithmetic number, because the mean of its divisors is an integer number (17829289879800).

Almost surely, 2^{166404465206546} is an apocalyptic number.

166404465206546 is a deficient number, since it is larger than the sum of its proper divisors (118864172870254).

166404465206546 is a wasteful number, since it uses less digits than its factorization.

166404465206546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160024169.

The product of its (nonzero) digits is 99532800, while the sum is 59.

The spelling of 166404465206546 in words is "one hundred sixty-six trillion, four hundred four billion, four hundred sixty-five million, two hundred six thousand, five hundred forty-six".