665007047936 has 864 divisors, whose sum is σ = 1870689730560. Its totient is φ = 229920768000.

The previous prime is 665007047867. The next prime is 665007047951. The reversal of 665007047936 is 639740700566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5236275905 + ... + 5236276031.

Almost surely, 2^665007047936 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 665007047936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (935344865280).

665007047936 is an abundant number, since it is smaller than the sum of its proper divisors (1205682682624).

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

665007047936 is a wasteful number, since it uses less digits than its factorization.

665007047936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 53.

The spelling of 665007047936 in words is "six hundred sixty-five billion, seven million, forty-seven thousand, nine hundred thirty-six".