971640443366 has 8 divisors (see below), whose sum is σ = 1543193645400. Its totient is φ = 457242561568.

The previous prime is 971640443327. The next prime is 971640443377. The reversal of 971640443366 is 663344046179.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14288830016 + ... + 14288830083.

It is an arithmetic number, because the mean of its divisors is an integer number (192899205675).

Almost surely, 2^971640443366 is an apocalyptic number.

971640443366 is a deficient number, since it is larger than the sum of its proper divisors (571553202034).

971640443366 is a wasteful number, since it uses less digits than its factorization.

971640443366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28577660118.

The product of its (nonzero) digits is 7838208, while the sum is 53.

The spelling of 971640443366 in words is "nine hundred seventy-one billion, six hundred forty million, four hundred forty-three thousand, three hundred sixty-six".