9167982787057 has 4 divisors (see below), whose sum is σ = 9707275892196. Its totient is φ = 8628689681920.

The previous prime is 9167982787027. The next prime is 9167982787063. The reversal of 9167982787057 is 7507872897619.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5813649144801 + 3354333642256 = 2411151^2 + 1831484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9167982787057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9167982787027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269646552544 + ... + 269646552577.

It is an arithmetic number, because the mean of its divisors is an integer number (2426818973049).

Almost surely, 2^{9167982787057} is an apocalyptic number.

It is an amenable number.

9167982787057 is a deficient number, since it is larger than the sum of its proper divisors (539293105139).

9167982787057 is a wasteful number, since it uses less digits than its factorization.

9167982787057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539293105138.

The product of its (nonzero) digits is 746807040, while the sum is 76.

The spelling of 9167982787057 in words is "nine trillion, one hundred sixty-seven billion, nine hundred eighty-two million, seven hundred eighty-seven thousand, fifty-seven".