964191009646 has 4 divisors (see below), whose sum is σ = 1446286514472. Its totient is φ = 482095504822.

The previous prime is 964191009637. The next prime is 964191009697. The reversal of 964191009646 is 646900191469.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 241047752410 + ... + 241047752413.

It is an arithmetic number, because the mean of its divisors is an integer number (361571628618).

Almost surely, 2^964191009646 is an apocalyptic number.

964191009646 is a deficient number, since it is larger than the sum of its proper divisors (482095504826).

964191009646 is a wasteful number, since it uses less digits than its factorization.

964191009646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482095504825.

The product of its (nonzero) digits is 2519424, while the sum is 55.

The spelling of 964191009646 in words is "nine hundred sixty-four billion, one hundred ninety-one million, nine thousand, six hundred forty-six".