9773001881644 has 6 divisors (see below), whose sum is σ = 17102753292884. Its totient is φ = 4886500940820.

The previous prime is 9773001881627. The next prime is 9773001881677. The reversal of 9773001881644 is 4461881003779.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1221625235202 + ... + 1221625235209.

Almost surely, 2^{9773001881644} is an apocalyptic number.

It is an amenable number.

9773001881644 is a deficient number, since it is larger than the sum of its proper divisors (7329751411240).

9773001881644 is a wasteful number, since it uses less digits than its factorization.

9773001881644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443250470415 (or 2443250470413 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 58.

The spelling of 9773001881644 in words is "nine trillion, seven hundred seventy-three billion, one million, eight hundred eighty-one thousand, six hundred forty-four".