166688724083 has 16 divisors (see below), whose sum is σ = 191628529920. Its totient is φ = 142032290400.

The previous prime is 166688724061. The next prime is 166688724089. The reversal of 166688724083 is 380427886661.

It is a happy number.

It is not a de Polignac number, because 166688724083 - 2¹⁴ = 166688707699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166688724089) 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, 1203053 + ... + 1334433.

It is an arithmetic number, because the mean of its divisors is an integer number (11976783120).

Almost surely, 2^166688724083 is an apocalyptic number.

166688724083 is a deficient number, since it is larger than the sum of its proper divisors (24939805837).

166688724083 is a wasteful number, since it uses less digits than its factorization.

166688724083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132458.

The product of its (nonzero) digits is 18579456, while the sum is 59.

The spelling of 166688724083 in words is "one hundred sixty-six billion, six hundred eighty-eight million, seven hundred twenty-four thousand, eighty-three".