1161323595957 has 128 divisors (see below), whose sum is σ = 1918780047360. Its totient is φ = 610559389440.

The previous prime is 1161323595947. The next prime is 1161323595959. The reversal of 1161323595957 is 7595953231611.

It is not a de Polignac number, because 1161323595957 - 2⁶ = 1161323595893 is a prime.

It is a super-4 number, since 4×1161323595957⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a junction number, because it is equal to n+sod(n) for n = 1161323595897 and 1161323595906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161323595959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 249048408 + ... + 249053070.

It is an arithmetic number, because the mean of its divisors is an integer number (14990469120).

Almost surely, 2^{1161323595957} is an apocalyptic number.

It is an amenable number.

1161323595957 is a deficient number, since it is larger than the sum of its proper divisors (757456451403).

1161323595957 is a wasteful number, since it uses less digits than its factorization.

1161323595957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4943.

The product of its digits is 7654500, while the sum is 57.

The spelling of 1161323595957 in words is "one trillion, one hundred sixty-one billion, three hundred twenty-three million, five hundred ninety-five thousand, nine hundred fifty-seven".