20349407166 has 32 divisors (see below), whose sum is σ = 44737646976. Its totient is φ = 6119412000.

The previous prime is 20349407153. The next prime is 20349407257. The reversal of 20349407166 is 66170494302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1168165 + ... + 1185456.

It is an arithmetic number, because the mean of its divisors is an integer number (1398051468).

Almost surely, 2^20349407166 is an apocalyptic number.

20349407166 is an abundant number, since it is smaller than the sum of its proper divisors (24388239810).

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

20349407166 is a wasteful number, since it uses less digits than its factorization.

20349407166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2353768.

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 20349407166 in words is "twenty billion, three hundred forty-nine million, four hundred seven thousand, one hundred sixty-six".