1163023543440 has 120 divisors (see below), whose sum is σ = 4260895374528. Its totient is φ = 281945099520.

The previous prime is 1163023543403. The next prime is 1163023543453. The reversal of 1163023543440 is 443453203611.

1163023543440 is a `hidden beast` number, since 1 + 1 + 6 + 302 + 3 + 5 + 4 + 344 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1163023543395 and 1163023543404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73415284 + ... + 73431123.

Almost surely, 2^{1163023543440} is an apocalyptic number.

1163023543440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1163023543440 is an abundant number, since it is smaller than the sum of its proper divisors (3097871831088).

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

1163023543440 is a wasteful number, since it uses less digits than its factorization.

1163023543440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146846437 (or 146846428 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 1163023543440 in words is "one trillion, one hundred sixty-three billion, twenty-three million, five hundred forty-three thousand, four hundred forty".