671958337950 has 168 divisors, whose sum is σ = 1874980047168. Its totient is φ = 179086256640.

The previous prime is 671958337879. The next prime is 671958337979. The reversal of 671958337950 is 59733859176.

671958337950 is a `hidden beast` number, since 6 + 7 + 19 + 583 + 37 + 9 + 5 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 80440974 + ... + 80449326.

Almost surely, 2^671958337950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671958337950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (937490023584).

671958337950 is an abundant number, since it is smaller than the sum of its proper divisors (1203021709218).

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

671958337950 is a wasteful number, since it uses less digits than its factorization.

671958337950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10590 (or 10570 counting only the distinct ones).

The product of its (nonzero) digits is 42865200, while the sum is 63.

The spelling of 671958337950 in words is "six hundred seventy-one billion, nine hundred fifty-eight million, three hundred thirty-seven thousand, nine hundred fifty".