671495500512 has 288 divisors, whose sum is σ = 2104204677120. Its totient is φ = 202179732480.

The previous prime is 671495500451. The next prime is 671495500513. The reversal of 671495500512 is 215005594176.

It is a happy number.

671495500512 is a `hidden beast` number, since 6 + 7 + 1 + 4 + 95 + 500 + 51 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×671495500512² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671495500513) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39887937 + ... + 39904767.

It is an arithmetic number, because the mean of its divisors is an integer number (7306266240).

Almost surely, 2^671495500512 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 671495500512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1052102338560).

671495500512 is an abundant number, since it is smaller than the sum of its proper divisors (1432709176608).

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

671495500512 is a wasteful number, since it uses less digits than its factorization.

671495500512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17206 (or 17195 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The spelling of 671495500512 in words is "six hundred seventy-one billion, four hundred ninety-five million, five hundred thousand, five hundred twelve".