1131240146400 has 864 divisors, whose sum is σ = 5125450387680. Its totient is φ = 238676336640.

The previous prime is 1131240146227. The next prime is 1131240146401. The reversal of 1131240146400 is 46410421311.

1131240146400 is a `hidden beast` number, since 1 + 1 + 3 + 1 + 2 + 4 + 0 + 14 + 640 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131240146401) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 13718092 + ... + 13800308.

It is an arithmetic number, because the mean of its divisors is an integer number (5932234245).

Almost surely, 2^{1131240146400} is an apocalyptic number.

1131240146400 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 1131240146400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2562725193840).

1131240146400 is an abundant number, since it is smaller than the sum of its proper divisors (3994210241280).

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

1131240146400 is a wasteful number, since it uses less digits than its factorization.

1131240146400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82273 (or 82247 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 1131240146400 its reverse (46410421311), we get a palindrome (1177650567711).

The spelling of 1131240146400 in words is "one trillion, one hundred thirty-one billion, two hundred forty million, one hundred forty-six thousand, four hundred".