166165214603 has 8 divisors (see below), whose sum is σ = 171695410560. Its totient is φ = 160645645440.

The previous prime is 166165214597. The next prime is 166165214671. The reversal of 166165214603 is 306412561661.

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

It is a cyclic number.

It is not a de Polignac number, because 166165214603 - 2⁶ = 166165214539 is a prime.

It is a super-2 number, since 2×166165214603² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166165214503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2624900 + ... + 2687457.

It is an arithmetic number, because the mean of its divisors is an integer number (21461926320).

Almost surely, 2^166165214603 is an apocalyptic number.

166165214603 is a deficient number, since it is larger than the sum of its proper divisors (5530195957).

166165214603 is a wasteful number, since it uses less digits than its factorization.

166165214603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5313397.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 166165214603 in words is "one hundred sixty-six billion, one hundred sixty-five million, two hundred fourteen thousand, six hundred three".