166356303663 has 16 divisors (see below), whose sum is σ = 243371500416. Its totient is φ = 100239212640.

The previous prime is 166356303649. The next prime is 166356303667. The reversal of 166356303663 is 366303653661.

It is not a de Polignac number, because 166356303663 - 2⁶ = 166356303599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166356303667) 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, 14563945 + ... + 14575362.

It is an arithmetic number, because the mean of its divisors is an integer number (15210718776).

Almost surely, 2^166356303663 is an apocalyptic number.

166356303663 is a deficient number, since it is larger than the sum of its proper divisors (77015196753).

166356303663 is a wasteful number, since it uses less digits than its factorization.

166356303663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29139494.

The product of its (nonzero) digits is 3149280, while the sum is 48.

The spelling of 166356303663 in words is "one hundred sixty-six billion, three hundred fifty-six million, three hundred three thousand, six hundred sixty-three".