1154461973472 has 144 divisors (see below), whose sum is σ = 3434370030000. Its totient is φ = 367376013312.

The previous prime is 1154461973471. The next prime is 1154461973479. The reversal of 1154461973472 is 2743791644511.

1154461973472 is a `hidden beast` number, since 1 + 1 + 5 + 44 + 61 + 9 + 73 + 472 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154461973471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33222 + ... + 1519877.

It is an arithmetic number, because the mean of its divisors is an integer number (23849791875).

Almost surely, 2^{1154461973472} is an apocalyptic number.

1154461973472 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 1154461973472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1717185015000).

1154461973472 is an abundant number, since it is smaller than the sum of its proper divisors (2279908056528).

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

1154461973472 is a wasteful number, since it uses less digits than its factorization.

1154461973472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553233 (or 1553222 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The spelling of 1154461973472 in words is "one trillion, one hundred fifty-four billion, four hundred sixty-one million, nine hundred seventy-three thousand, four hundred seventy-two".