166477475074477 has 16 divisors (see below), whose sum is σ = 190295102321280. Its totient is φ = 142668632581632.

The previous prime is 166477475074453. The next prime is 166477475074481. The reversal of 166477475074477 is 774470574774661.

It is a cyclic number.

It is not a de Polignac number, because 166477475074477 - 2³⁵ = 166443115336109 is a prime.

It is a super-2 number, since 2×166477475074477² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166477475074777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1180009813 + ... + 1180150885.

It is an arithmetic number, because the mean of its divisors is an integer number (11893443895080).

Almost surely, 2^{166477475074477} is an apocalyptic number.

It is an amenable number.

166477475074477 is a deficient number, since it is larger than the sum of its proper divisors (23817627246803).

166477475074477 is a wasteful number, since it uses less digits than its factorization.

166477475074477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171012.

The product of its (nonzero) digits is 5421265920, while the sum is 76.

The spelling of 166477475074477 in words is "one hundred sixty-six trillion, four hundred seventy-seven billion, four hundred seventy-five million, seventy-four thousand, four hundred seventy-seven".