166573203434 has 16 divisors (see below), whose sum is σ = 272635161120. Its totient is φ = 75698195760.

The previous prime is 166573203431. The next prime is 166573203437. The reversal of 166573203434 is 434302375661.

It is an interprime number because it is at equal distance from previous prime (166573203431) and next prime (166573203437).

It is not an unprimeable number, because it can be changed into a prime (166573203431) 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, 743744 + ... + 941435.

It is an arithmetic number, because the mean of its divisors is an integer number (17039697570).

Almost surely, 2^166573203434 is an apocalyptic number.

166573203434 is a deficient number, since it is larger than the sum of its proper divisors (106061957686).

166573203434 is a wasteful number, since it uses less digits than its factorization.

166573203434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689685.

The product of its (nonzero) digits is 1088640, while the sum is 44.

The spelling of 166573203434 in words is "one hundred sixty-six billion, five hundred seventy-three million, two hundred three thousand, four hundred thirty-four".