1171717333553 has 4 divisors (see below), whose sum is σ = 1261849436148. Its totient is φ = 1081585230960.

The previous prime is 1171717333543. The next prime is 1171717333601. The reversal of 1171717333553 is 3553337171711.

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 732722304064 + 438995029489 = 855992^2 + 662567^2 .

It is not a de Polignac number, because 1171717333553 - 2³⁴ = 1154537464369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1171717333498 and 1171717333507.

It is not an unprimeable number, because it can be changed into a prime (1171717333543) 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 3 ways as a sum of consecutive naturals, for example, 45066051278 + ... + 45066051303.

It is an arithmetic number, because the mean of its divisors is an integer number (315462359037).

Almost surely, 2^{1171717333553} is an apocalyptic number.

1171717333553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1171717333553 is a deficient number, since it is larger than the sum of its proper divisors (90132102595).

1171717333553 is an equidigital number, since it uses as much as digits as its factorization.

1171717333553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90132102594.

The product of its digits is 694575, while the sum is 47.

The spelling of 1171717333553 in words is "one trillion, one hundred seventy-one billion, seven hundred seventeen million, three hundred thirty-three thousand, five hundred fifty-three".