671717169360 has 800 divisors, whose sum is σ = 2506587925248. Its totient is φ = 166309355520.

The previous prime is 671717169353. The next prime is 671717169439. The reversal of 671717169360 is 63961717176.

It is a super-2 number, since 2×671717169360² (a number of 24 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 671717169297 and 671717169306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1800850134 + ... + 1800850506.

Almost surely, 2^671717169360 is an apocalyptic number.

671717169360 is a gapful number since it is divisible by the number (60) 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 671717169360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1253293962624).

671717169360 is an abundant number, since it is smaller than the sum of its proper divisors (1834870755888).

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

671717169360 is a wasteful number, since it uses less digits than its factorization.

671717169360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 2000376, while the sum is 54.

The spelling of 671717169360 in words is "six hundred seventy-one billion, seven hundred seventeen million, one hundred sixty-nine thousand, three hundred sixty".