163661839080 has 64 divisors (see below), whose sum is σ = 493129641600. Its totient is φ = 43452568320.

The previous prime is 163661839037. The next prime is 163661839091. The reversal of 163661839080 is 80938166361.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2950356 + ... + 3005315.

It is an arithmetic number, because the mean of its divisors is an integer number (7705150650).

Almost surely, 2^163661839080 is an apocalyptic number.

163661839080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163661839080 is an abundant number, since it is smaller than the sum of its proper divisors (329467802520).

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

163661839080 is a wasteful number, since it uses less digits than its factorization.

163661839080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5955914 (or 5955910 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 163661839080 in words is "one hundred sixty-three billion, six hundred sixty-one million, eight hundred thirty-nine thousand, eighty".