117172852920 has 192 divisors, whose sum is σ = 403643373120. Its totient is φ = 29376663552.

The previous prime is 117172852913. The next prime is 117172852939. The reversal of 117172852920 is 29258271711.

117172852920 is a `hidden beast` number, since 11 + 71 + 7 + 28 + 529 + 20 = 666.

It is a super-2 number, since 2×117172852920² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 6006222 + ... + 6025698.

It is an arithmetic number, because the mean of its divisors is an integer number (2102309235).

Almost surely, 2^117172852920 is an apocalyptic number.

117172852920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117172852920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201821686560).

117172852920 is an abundant number, since it is smaller than the sum of its proper divisors (286470520200).

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

117172852920 is a wasteful number, since it uses less digits than its factorization.

117172852920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20494 (or 20487 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 45.

The spelling of 117172852920 in words is "one hundred seventeen billion, one hundred seventy-two million, eight hundred fifty-two thousand, nine hundred twenty".