1171196891050 has 24 divisors (see below), whose sum is σ = 2178473431500. Its totient is φ = 468468602880.

The previous prime is 1171196891021. The next prime is 1171196891069. The reversal of 1171196891050 is 501986911711.

It can be written as a sum of positive squares in 6 ways, for example, as 305677400161 + 865519490889 = 552881^2 + 930333^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1171196890985 and 1171196891003.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2338276 + ... + 2794624.

Almost surely, 2^{1171196891050} is an apocalyptic number.

1171196891050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1171196891050 is a deficient number, since it is larger than the sum of its proper divisors (1007276540450).

1171196891050 is a wasteful number, since it uses less digits than its factorization.

1171196891050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507690 (or 507685 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 49.

The spelling of 1171196891050 in words is "one trillion, one hundred seventy-one billion, one hundred ninety-six million, eight hundred ninety-one thousand, fifty".