166591459350 has 192 divisors, whose sum is σ = 470112768000. Its totient is φ = 43366752000.

The previous prime is 166591459277. The next prime is 166591459373. The reversal of 166591459350 is 53954195661.

166591459350 is a `hidden beast` number, since 1 + 6 + 6 + 591 + 45 + 9 + 3 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9483075 + ... + 9500625.

It is an arithmetic number, because the mean of its divisors is an integer number (2448504000).

Almost surely, 2^166591459350 is an apocalyptic number.

166591459350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166591459350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235056384000).

166591459350 is an abundant number, since it is smaller than the sum of its proper divisors (303521308650).

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

166591459350 is a wasteful number, since it uses less digits than its factorization.

166591459350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17740 (or 17729 counting only the distinct ones).

The product of its (nonzero) digits is 4374000, while the sum is 54.

The spelling of 166591459350 in words is "one hundred sixty-six billion, five hundred ninety-one million, four hundred fifty-nine thousand, three hundred fifty".