1145581750872 has 256 divisors, whose sum is σ = 3636480355200. Its totient is φ = 331026186240.

The previous prime is 1145581750861. The next prime is 1145581750879. The reversal of 1145581750872 is 2780571855411.

1145581750872 is a `hidden beast` number, since 1 + 1 + 4 + 5 + 58 + 17 + 508 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145581750879) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21980268 + ... + 22032324.

Almost surely, 2^{1145581750872} is an apocalyptic number.

1145581750872 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 1145581750872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1818240177600).

1145581750872 is an abundant number, since it is smaller than the sum of its proper divisors (2490898604328).

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

1145581750872 is a wasteful number, since it uses less digits than its factorization.

1145581750872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52563 (or 52553 counting only the distinct ones).

The product of its (nonzero) digits is 3136000, while the sum is 54.

The spelling of 1145581750872 in words is "one trillion, one hundred forty-five billion, five hundred eighty-one million, seven hundred fifty thousand, eight hundred seventy-two".