166445003261136 has 80 divisors (see below), whose sum is σ = 430187612659200. Its totient is φ = 55455262646784.

The previous prime is 166445003261081. The next prime is 166445003261137. The reversal of 166445003261136 is 631162300544661.

It is a happy number.

166445003261136 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 2×166445003261136² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166445003261137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 901223010 + ... + 901407678.

It is an arithmetic number, because the mean of its divisors is an integer number (5377345158240).

Almost surely, 2^{166445003261136} is an apocalyptic number.

166445003261136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166445003261136 is an abundant number, since it is smaller than the sum of its proper divisors (263742609398064).

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

166445003261136 is a wasteful number, since it uses less digits than its factorization.

166445003261136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193516 (or 193510 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 166445003261136 in words is "one hundred sixty-six trillion, four hundred forty-five billion, three million, two hundred sixty-one thousand, one hundred thirty-six".