84671904768 has 132 divisors (see below), whose sum is σ = 248064221160. Its totient is φ = 25658040320.

The previous prime is 84671904739. The next prime is 84671904827. The reversal of 84671904768 is 86740917648.

It is a tau number, because it is divible by the number of its divisors (132).

It is a super-2 number, since 2×84671904768² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 257818 + ... + 485606.

Almost surely, 2^84671904768 is an apocalyptic number.

84671904768 is a gapful number since it is divisible by the number (88) 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 84671904768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124032110580).

84671904768 is an abundant number, since it is smaller than the sum of its proper divisors (163392316392).

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

84671904768 is a wasteful number, since it uses less digits than its factorization.

84671904768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227834 (or 227805 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 84671904768 in words is "eighty-four billion, six hundred seventy-one million, nine hundred four thousand, seven hundred sixty-eight".