1163440450452 has 96 divisors (see below), whose sum is σ = 3287489200128. Its totient is φ = 312621663744.

The previous prime is 1163440450451. The next prime is 1163440450493. The reversal of 1163440450452 is 2540540443611.

It is a self number, because there is not a number n which added to its sum of digits gives 1163440450452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163440450451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1587973 + ... + 2201939.

It is an arithmetic number, because the mean of its divisors is an integer number (34244679168).

Almost surely, 2^{1163440450452} is an apocalyptic number.

1163440450452 is a gapful number since it is divisible by the number (12) 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 1163440450452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1643744600064).

1163440450452 is an abundant number, since it is smaller than the sum of its proper divisors (2124048749676).

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

1163440450452 is a wasteful number, since it uses less digits than its factorization.

1163440450452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615325 (or 615323 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 39.

The spelling of 1163440450452 in words is "one trillion, one hundred sixty-three billion, four hundred forty million, four hundred fifty thousand, four hundred fifty-two".