1152280535440 has 40 divisors (see below), whose sum is σ = 2702760693048. Its totient is φ = 456833341440.

The previous prime is 1152280535387. The next prime is 1152280535509. The reversal of 1152280535440 is 445350822511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 968703376 + 1151311832064 = 31124^2 + 1072992^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1152280535393 and 1152280535402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63723291 + ... + 63741370.

Almost surely, 2^{1152280535440} is an apocalyptic number.

1152280535440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1152280535440 is an abundant number, since it is smaller than the sum of its proper divisors (1550480157608).

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

1152280535440 is a wasteful number, since it uses less digits than its factorization.

1152280535440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127464787 (or 127464781 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 40.

The spelling of 1152280535440 in words is "one trillion, one hundred fifty-two billion, two hundred eighty million, five hundred thirty-five thousand, four hundred forty".