166330443545 has 32 divisors (see below), whose sum is σ = 239358136320. Its totient is φ = 108486671040.

The previous prime is 166330443533. The next prime is 166330443557. The reversal of 166330443545 is 545344033661.

It is an interprime number because it is at equal distance from previous prime (166330443533) and next prime (166330443557).

It is not a de Polignac number, because 166330443545 - 2⁸ = 166330443289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166330443496 and 166330443505.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 433061 + ... + 721250.

It is an arithmetic number, because the mean of its divisors is an integer number (7479941760).

Almost surely, 2^166330443545 is an apocalyptic number.

It is an amenable number.

166330443545 is a deficient number, since it is larger than the sum of its proper divisors (73027692775).

166330443545 is a wasteful number, since it uses less digits than its factorization.

166330443545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154525.

The product of its (nonzero) digits is 1555200, while the sum is 44.

The spelling of 166330443545 in words is "one hundred sixty-six billion, three hundred thirty million, four hundred forty-three thousand, five hundred forty-five".