1123459139880 has 768 divisors, whose sum is σ = 4789705789440. Its totient is φ = 223280893440.

The previous prime is 1123459139879. The next prime is 1123459139981. The reversal of 1123459139880 is 889319543211.

It is a happy number.

1123459139880 is a `hidden beast` number, since 1 + 1 + 23 + 459 + 1 + 3 + 98 + 80 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 77137479 + ... + 77152041.

It is an arithmetic number, because the mean of its divisors is an integer number (6236596080).

Almost surely, 2^{1123459139880} is an apocalyptic number.

1123459139880 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 1123459139880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2394852894720).

1123459139880 is an abundant number, since it is smaller than the sum of its proper divisors (3666246649560).

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

1123459139880 is a wasteful number, since it uses less digits than its factorization.

1123459139880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14643 (or 14614 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 1123459139880 in words is "one trillion, one hundred twenty-three billion, four hundred fifty-nine million, one hundred thirty-nine thousand, eight hundred eighty".