166445136363 has 64 divisors (see below), whose sum is σ = 254769753600. Its totient is φ = 95752949760.

The previous prime is 166445136337. The next prime is 166445136371. The reversal of 166445136363 is 363631544661.

It is a happy number.

It is not a de Polignac number, because 166445136363 - 2¹⁷ = 166445005291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166445136463) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11576443 + ... + 11590811.

It is an arithmetic number, because the mean of its divisors is an integer number (3980777400).

Almost surely, 2^166445136363 is an apocalyptic number.

166445136363 is a deficient number, since it is larger than the sum of its proper divisors (88324617237).

166445136363 is a wasteful number, since it uses less digits than its factorization.

166445136363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14652.

The product of its digits is 2799360, while the sum is 48.

The spelling of 166445136363 in words is "one hundred sixty-six billion, four hundred forty-five million, one hundred thirty-six thousand, three hundred sixty-three".