165117477 has 8 divisors (see below), whose sum is σ = 251607616. Its totient is φ = 94352832.

The previous prime is 165117457. The next prime is 165117487. The reversal of 165117477 is 774711561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165117477 - 2⁷ = 165117349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165117427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3931348 + ... + 3931389.

It is an arithmetic number, because the mean of its divisors is an integer number (31450952).

Almost surely, 2^165117477 is an apocalyptic number.

It is an amenable number.

165117477 is a deficient number, since it is larger than the sum of its proper divisors (86490139).

165117477 is an equidigital number, since it uses as much as digits as its factorization.

165117477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7862747.

The product of its digits is 41160, while the sum is 39.

The square root of 165117477 is about 12849.8045510428. The cubic root of 165117477 is about 548.6107937808.

The spelling of 165117477 in words is "one hundred sixty-five million, one hundred seventeen thousand, four hundred seventy-seven".