671000234880 has 128 divisors (see below), whose sum is σ = 2142283502880. Its totient is φ = 178643075072.

The previous prime is 671000234803. The next prime is 671000234881. The reversal of 671000234880 is 88432000176.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×671000234880² (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 (671000234881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 901432 + ... + 1467848.

Almost surely, 2^671000234880 is an apocalyptic number.

671000234880 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 671000234880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1071141751440).

671000234880 is an abundant number, since it is smaller than the sum of its proper divisors (1471283268000).

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

671000234880 is a wasteful number, since it uses less digits than its factorization.

671000234880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567056 (or 567044 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 671000234880 in words is "six hundred seventy-one billion, two hundred thirty-four thousand, eight hundred eighty".