166420610065120 has 48 divisors (see below), whose sum is σ = 393867037302480. Its totient is φ = 66450005545984.

The previous prime is 166420610065093. The next prime is 166420610065123. The reversal of 166420610065120 is 21560016024661.

166420610065120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166420610065120² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166420610065123) 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 7 ways as a sum of consecutive naturals, for example, 923647765 + ... + 923827924.

It is an arithmetic number, because the mean of its divisors is an integer number (8205563277135).

Almost surely, 2^{166420610065120} is an apocalyptic number.

166420610065120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166420610065120 is an abundant number, since it is smaller than the sum of its proper divisors (227446427237360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166420610065120 is a wasteful number, since it uses less digits than its factorization.

166420610065120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847476267 (or 1847476259 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

Adding to 166420610065120 its reverse (21560016024661), we get a palindrome (187980626089781).

The spelling of 166420610065120 in words is "one hundred sixty-six trillion, four hundred twenty billion, six hundred ten million, sixty-five thousand, one hundred twenty".