9390021345777 has 24 divisors (see below), whose sum is σ = 12637512918016. Its totient is φ = 6201433562688.

The previous prime is 9390021345721. The next prime is 9390021345779. The reversal of 9390021345777 is 7775431200939.

It is not a de Polignac number, because 9390021345777 - 2¹² = 9390021341681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9390021345779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174596463 + ... + 174650235.

Almost surely, 2^{9390021345777} is an apocalyptic number.

It is an amenable number.

9390021345777 is a deficient number, since it is larger than the sum of its proper divisors (3247491572239).

9390021345777 is an equidigital number, since it uses as much as digits as its factorization.

9390021345777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55257 (or 54580 counting only the distinct ones).

The product of its (nonzero) digits is 10001880, while the sum is 57.

The spelling of 9390021345777 in words is "nine trillion, three hundred ninety billion, twenty-one million, three hundred forty-five thousand, seven hundred seventy-seven".