166436510650355 has 16 divisors (see below), whose sum is σ = 217932019561728. Its totient is φ = 121016125836000.

The previous prime is 166436510650339. The next prime is 166436510650357. The reversal of 166436510650355 is 553056015634661.

It is a happy number.

It is not a de Polignac number, because 166436510650355 - 2⁴ = 166436510650339 is a prime.

It is a super-2 number, since 2×166436510650355² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166436510650355.

It is not an unprimeable number, because it can be changed into a prime (166436510650357) 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, 357379961 + ... + 357845370.

It is an arithmetic number, because the mean of its divisors is an integer number (13620751222608).

Almost surely, 2^{166436510650355} is an apocalyptic number.

166436510650355 is a deficient number, since it is larger than the sum of its proper divisors (51495508911373).

166436510650355 is a wasteful number, since it uses less digits than its factorization.

166436510650355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715229578.

The product of its (nonzero) digits is 29160000, while the sum is 56.

The spelling of 166436510650355 in words is "one hundred sixty-six trillion, four hundred thirty-six billion, five hundred ten million, six hundred fifty thousand, three hundred fifty-five".