166256225030553 has 48 divisors (see below), whose sum is σ = 271443484800000. Its totient is φ = 90001794925728.

The previous prime is 166256225030453. The next prime is 166256225030569. The reversal of 166256225030553 is 355030522652661.

It is a happy number.

It is not a de Polignac number, because 166256225030553 - 2⁸ = 166256225030297 is a prime.

It is a super-2 number, since 2×166256225030553² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166256225030496 and 166256225030505.

It is not an unprimeable number, because it can be changed into a prime (166256225030053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 168985948 + ... + 169966946.

It is an arithmetic number, because the mean of its divisors is an integer number (5655072600000).

Almost surely, 2^{166256225030553} is an apocalyptic number.

It is an amenable number.

166256225030553 is a deficient number, since it is larger than the sum of its proper divisors (105187259769447).

166256225030553 is a wasteful number, since it uses less digits than its factorization.

166256225030553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041714 (or 1041707 counting only the distinct ones).

The product of its (nonzero) digits is 9720000, while the sum is 51.

The spelling of 166256225030553 in words is "one hundred sixty-six trillion, two hundred fifty-six billion, two hundred twenty-five million, thirty thousand, five hundred fifty-three".