166633601252 has 6 divisors (see below), whose sum is σ = 291608802198. Its totient is φ = 83316800624.

The previous prime is 166633601201. The next prime is 166633601263. The reversal of 166633601252 is 252106336661.

It can be written as a sum of positive squares in only one way, i.e., 166181783716 + 451817536 = 407654^2 + 21256^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20829200153 + ... + 20829200160.

It is an arithmetic number, because the mean of its divisors is an integer number (48601467033).

Almost surely, 2^166633601252 is an apocalyptic number.

It is an amenable number.

166633601252 is a deficient number, since it is larger than the sum of its proper divisors (124975200946).

166633601252 is a wasteful number, since it uses less digits than its factorization.

166633601252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41658400317 (or 41658400315 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 166633601252 in words is "one hundred sixty-six billion, six hundred thirty-three million, six hundred one thousand, two hundred fifty-two".