166436505245252 has 36 divisors (see below), whose sum is σ = 320198435077248. Its totient is φ = 75641407182000.

The previous prime is 166436505245249. The next prime is 166436505245359. The reversal of 166436505245252 is 252542505634661.

It is a happy number.

166436505245252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166436505245252² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23075468 + ... + 29416835.

It is an arithmetic number, because the mean of its divisors is an integer number (8894400974368).

Almost surely, 2^{166436505245252} is an apocalyptic number.

It is an amenable number.

166436505245252 is a deficient number, since it is larger than the sum of its proper divisors (153761929831996).

166436505245252 is a wasteful number, since it uses less digits than its factorization.

166436505245252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52498880 (or 52498867 counting only the distinct ones).

The product of its (nonzero) digits is 51840000, while the sum is 56.

The spelling of 166436505245252 in words is "one hundred sixty-six trillion, four hundred thirty-six billion, five hundred five million, two hundred forty-five thousand, two hundred fifty-two".