671209783296 has 256 divisors, whose sum is σ = 1932894532800. Its totient is φ = 205953957888.

The previous prime is 671209783267. The next prime is 671209783337. The reversal of 671209783296 is 692387902176.

It is a tau number, because it is divible by the number of its divisors (256).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 842169970 + ... + 842170766.

Almost surely, 2^671209783296 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 671209783296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (966447266400).

671209783296 is an abundant number, since it is smaller than the sum of its proper divisors (1261684749504).

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

671209783296 is an equidigital number, since it uses as much as digits as its factorization.

671209783296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502 (or 1474 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 60.

The spelling of 671209783296 in words is "six hundred seventy-one billion, two hundred nine million, seven hundred eighty-three thousand, two hundred ninety-six".