1118954556720 has 2880 divisors, whose sum is σ = 5453573806080. Its totient is φ = 210058168320.

The previous prime is 1118954556689. The next prime is 1118954556757. The reversal of 1118954556720 is 276554598111.

1118954556720 is a `hidden beast` number, since 1 + 1 + 1 + 8 + 9 + 54 + 5 + 567 + 20 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 23807543737 + ... + 23807543783.

It is an arithmetic number, because the mean of its divisors is an integer number (1893602016).

Almost surely, 2^{1118954556720} is an apocalyptic number.

1118954556720 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 1118954556720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2726786903040).

1118954556720 is an abundant number, since it is smaller than the sum of its proper divisors (4334619249360).

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

1118954556720 is a wasteful number, since it uses less digits than its factorization.

1118954556720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 54.

The spelling of 1118954556720 in words is "one trillion, one hundred eighteen billion, nine hundred fifty-four million, five hundred fifty-six thousand, seven hundred twenty".