166653656165026 has 16 divisors (see below), whose sum is σ = 258601399035840. Its totient is φ = 80453209777360.

The previous prime is 166653656164993. The next prime is 166653656165027. The reversal of 166653656165026 is 620561656356661.

It is a super-2 number, since 2×166653656165026² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166653656165027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12371715 + ... + 22053721.

It is an arithmetic number, because the mean of its divisors is an integer number (16162587439740).

Almost surely, 2^{166653656165026} is an apocalyptic number.

166653656165026 is a deficient number, since it is larger than the sum of its proper divisors (91947742870814).

166653656165026 is a wasteful number, since it uses less digits than its factorization.

166653656165026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9978809.

The product of its (nonzero) digits is 209952000, while the sum is 64.

The spelling of 166653656165026 in words is "one hundred sixty-six trillion, six hundred fifty-three billion, six hundred fifty-six million, one hundred sixty-five thousand, twenty-six".