1171643516440 has 16 divisors (see below), whose sum is σ = 2636197912080. Its totient is φ = 468657406560.

The previous prime is 1171643516401. The next prime is 1171643516473. The reversal of 1171643516440 is 446153461711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14645543916 + ... + 14645543995.

It is an arithmetic number, because the mean of its divisors is an integer number (164762369505).

Almost surely, 2^{1171643516440} is an apocalyptic number.

1171643516440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1171643516440 is an abundant number, since it is smaller than the sum of its proper divisors (1464554395640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1171643516440 is a wasteful number, since it uses less digits than its factorization.

1171643516440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29291087922 (or 29291087918 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 1171643516440 in words is "one trillion, one hundred seventy-one billion, six hundred forty-three million, five hundred sixteen thousand, four hundred forty".