671130972512 has 192 divisors, whose sum is σ = 1835214796800. Its totient is φ = 233042503680.

The previous prime is 671130972509. The next prime is 671130972557. The reversal of 671130972512 is 215279031176.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 567689 + ... + 1290167.

It is an arithmetic number, because the mean of its divisors is an integer number (9558410400).

Almost surely, 2^671130972512 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 671130972512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (917607398400).

671130972512 is an abundant number, since it is smaller than the sum of its proper divisors (1164083824288).

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

671130972512 is a wasteful number, since it uses less digits than its factorization.

671130972512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722549 (or 722541 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 44.

The spelling of 671130972512 in words is "six hundred seventy-one billion, one hundred thirty million, nine hundred seventy-two thousand, five hundred twelve".