166439198360 has 32 divisors (see below), whose sum is σ = 396516915360. Its totient is φ = 62659462656.

The previous prime is 166439198293. The next prime is 166439198399. The reversal of 166439198360 is 63891934661.

It is a junction number, because it is equal to n+sod(n) for n = 166439198296 and 166439198305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122381084 + ... + 122382443.

It is an arithmetic number, because the mean of its divisors is an integer number (12391153605).

Almost surely, 2^166439198360 is an apocalyptic number.

166439198360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166439198360 is an abundant number, since it is smaller than the sum of its proper divisors (230077717000).

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

166439198360 is a wasteful number, since it uses less digits than its factorization.

166439198360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244763555 (or 244763551 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 56.

The spelling of 166439198360 in words is "one hundred sixty-six billion, four hundred thirty-nine million, one hundred ninety-eight thousand, three hundred sixty".