6173161720 has 128 divisors (see below), whose sum is σ = 16435742400. Its totient is φ = 2061107200.

The previous prime is 6173161717. The next prime is 6173161721. The reversal of 6173161720 is 271613716.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6173161721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 296616 + ... + 316744.

Almost surely, 2^6173161720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6173161720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8217871200).

6173161720 is an abundant number, since it is smaller than the sum of its proper divisors (10262580680).

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

6173161720 is a wasteful number, since it uses less digits than its factorization.

6173161720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20209 (or 20205 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 6173161720 is about 78569.4706613198. The cubic root of 6173161720 is about 1834.4359444068.

The spelling of 6173161720 in words is "six billion, one hundred seventy-three million, one hundred sixty-one thousand, seven hundred twenty".