166156630165352 has 64 divisors (see below), whose sum is σ = 322143927240960. Its totient is φ = 80293241952000.

The previous prime is 166156630165349. The next prime is 166156630165391. The reversal of 166156630165352 is 253561036651661.

It is a happy number.

It is a super-2 number, since 2×166156630165352² (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 15 ways as a sum of consecutive naturals, for example, 54844913 + ... + 57795135.

It is an arithmetic number, because the mean of its divisors is an integer number (5033498863140).

Almost surely, 2^{166156630165352} is an apocalyptic number.

It is an amenable number.

166156630165352 is a deficient number, since it is larger than the sum of its proper divisors (155987297075608).

166156630165352 is a wasteful number, since it uses less digits than its factorization.

166156630165352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2951994 (or 2951990 counting only the distinct ones).

The product of its (nonzero) digits is 17496000, while the sum is 56.

The spelling of 166156630165352 in words is "one hundred sixty-six trillion, one hundred fifty-six billion, six hundred thirty million, one hundred sixty-five thousand, three hundred fifty-two".