9493851387761 has 16 divisors (see below), whose sum is σ = 10478826686160. Its totient is φ = 8545475527680.

The previous prime is 9493851387737. The next prime is 9493851387803. The reversal of 9493851387761 is 1677831583949.

It can be written as a sum of positive squares in 8 ways, for example, as 4764096347761 + 4729755040000 = 2182681^2 + 2174800^2 .

It is not a de Polignac number, because 9493851387761 - 2³⁸ = 9218973480817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9493851387161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3462356 + ... + 5565573.

It is an arithmetic number, because the mean of its divisors is an integer number (654926667885).

Almost surely, 2^{9493851387761} is an apocalyptic number.

It is an amenable number.

9493851387761 is a deficient number, since it is larger than the sum of its proper divisors (984975298399).

9493851387761 is a wasteful number, since it uses less digits than its factorization.

9493851387761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9029956.

The product of its digits is 274337280, while the sum is 71.

The spelling of 9493851387761 in words is "nine trillion, four hundred ninety-three billion, eight hundred fifty-one million, three hundred eighty-seven thousand, seven hundred sixty-one".