1163553171000 has 512 divisors, whose sum is σ = 4076741560320. Its totient is φ = 273816576000.

The previous prime is 1163553170993. The next prime is 1163553171073. The reversal of 1163553171000 is 1713553611.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

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, 724052197 + ... + 724053803.

It is an arithmetic number, because the mean of its divisors is an integer number (7962385860).

Almost surely, 2^{1163553171000} is an apocalyptic number.

1163553171000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1163553171000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2038370780160).

1163553171000 is an abundant number, since it is smaller than the sum of its proper divisors (2913188389320).

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

1163553171000 is a wasteful number, since it uses less digits than its factorization.

1163553171000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272 (or 2258 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 33.

The spelling of 1163553171000 in words is "one trillion, one hundred sixty-three billion, five hundred fifty-three million, one hundred seventy-one thousand".