1154681342720 has 144 divisors (see below), whose sum is σ = 2925616542912. Its totient is φ = 435738378240.

The previous prime is 1154681342707. The next prime is 1154681342723. The reversal of 1154681342720 is 272431864511.

It is a happy number.

It is a Cunningham number, because it is equal to 1074561²-1.

It is not an unprimeable number, because it can be changed into a prime (1154681342723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1880480 + ... + 2417760.

It is an arithmetic number, because the mean of its divisors is an integer number (20316781548).

Almost surely, 2^{1154681342720} is an apocalyptic number.

1154681342720 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 1154681342720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1462808271456).

1154681342720 is an abundant number, since it is smaller than the sum of its proper divisors (1770935200192).

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

1154681342720 is an equidigital number, since it uses as much as digits as its factorization.

1154681342720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537398 (or 537384 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 1154681342720 in words is "one trillion, one hundred fifty-four billion, six hundred eighty-one million, three hundred forty-two thousand, seven hundred twenty".