169868538630 has 144 divisors (see below), whose sum is σ = 514197506160. Its totient is φ = 38794460544.

The previous prime is 169868538569. The next prime is 169868538661. The reversal of 169868538630 is 36835868961.

169868538630 is a `hidden beast` number, since 1 + 6 + 9 + 8 + 68 + 538 + 6 + 30 = 666.

It is a super-3 number, since 3×169868538630³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5439601 + ... + 5470739.

It is an arithmetic number, because the mean of its divisors is an integer number (3570816015).

Almost surely, 2^169868538630 is an apocalyptic number.

169868538630 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 169868538630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257098753080).

169868538630 is an abundant number, since it is smaller than the sum of its proper divisors (344328967530).

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

169868538630 is a wasteful number, since it uses less digits than its factorization.

169868538630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32403 (or 32393 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 63.

The spelling of 169868538630 in words is "one hundred sixty-nine billion, eight hundred sixty-eight million, five hundred thirty-eight thousand, six hundred thirty".