166252095428 has 12 divisors (see below), whose sum is σ = 290953036332. Its totient is φ = 83122656480.

The previous prime is 166252095421. The next prime is 166252095463. The reversal of 166252095428 is 824590252661.

It can be written as a sum of positive squares in 2 ways, for example, as 45487505284 + 120764590144 = 213278^2 + 347512^2 .

It is not an unprimeable number, because it can be changed into a prime (166252095421) 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, 735863 + ... + 934878.

It is an arithmetic number, because the mean of its divisors is an integer number (24246086361).

Almost surely, 2^166252095428 is an apocalyptic number.

It is an amenable number.

166252095428 is a deficient number, since it is larger than the sum of its proper divisors (124700940904).

166252095428 is a wasteful number, since it uses less digits than its factorization.

166252095428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695622 (or 1695620 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 50.

The spelling of 166252095428 in words is "one hundred sixty-six billion, two hundred fifty-two million, ninety-five thousand, four hundred twenty-eight".