1171710991936 has 63 divisors (see below), whose sum is σ = 2338438643281. Its totient is φ = 582517201664.

The previous prime is 1171710991931. The next prime is 1171710991973. The reversal of 1171710991936 is 6391990171711.

It is a happy number.

The square root of 1171710991936 is 1082456.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 77092854336 + 1094618137600 = 277656^2 + 1046240^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1171710991931) 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 8 ways as a sum of consecutive naturals, for example, 2329445061 + ... + 2329445563.

Almost surely, 2^{1171710991936} is an apocalyptic number.

1171710991936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1171710991936 is the 1082456-th square number.

It is an amenable number.

1171710991936 is a deficient number, since it is larger than the sum of its proper divisors (1166727651345).

1171710991936 is an frugal number, since it uses more digits than its factorization.

1171710991936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 642978, while the sum is 55.

The spelling of 1171710991936 in words is "one trillion, one hundred seventy-one billion, seven hundred ten million, nine hundred ninety-one thousand, nine hundred thirty-six".