166740149876 has 12 divisors (see below), whose sum is σ = 291806300772. Its totient is φ = 83366921088.

The previous prime is 166740149857. The next prime is 166740149879. The reversal of 166740149876 is 678941047661.

It can be written as a sum of positive squares in 2 ways, for example, as 138153456100 + 28586693776 = 371690^2 + 169076^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166740149879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 667445 + ... + 882588.

It is an arithmetic number, because the mean of its divisors is an integer number (24317191731).

Almost surely, 2^166740149876 is an apocalyptic number.

It is an amenable number.

166740149876 is a deficient number, since it is larger than the sum of its proper divisors (125066150896).

166740149876 is a wasteful number, since it uses less digits than its factorization.

166740149876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576930 (or 1576928 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 59.

The spelling of 166740149876 in words is "one hundred sixty-six billion, seven hundred forty million, one hundred forty-nine thousand, eight hundred seventy-six".