168632722890 has 48 divisors (see below), whose sum is σ = 448641487008. Its totient is φ = 43922940768.

The previous prime is 168632722879. The next prime is 168632722897. The reversal of 168632722890 is 98227236861.

168632722890 is a `hidden beast` number, since 1 + 6 + 8 + 6 + 327 + 228 + 90 = 666.

168632722890 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (168632722897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21783304 + ... + 21791043.

It is an arithmetic number, because the mean of its divisors is an integer number (9346697646).

Almost surely, 2^168632722890 is an apocalyptic number.

168632722890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168632722890 is an abundant number, since it is smaller than the sum of its proper divisors (280008764118).

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

168632722890 is a wasteful number, since it uses less digits than its factorization.

168632722890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43574403 (or 43574400 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 168632722890 in words is "one hundred sixty-eight billion, six hundred thirty-two million, seven hundred twenty-two thousand, eight hundred ninety".