1161040365540 has 192 divisors, whose sum is σ = 4147895808000. Its totient is φ = 266650392960.

The previous prime is 1161040365497. The next prime is 1161040365571. The reversal of 1161040365540 is 455630401611.

1161040365540 is a `hidden beast` number, since 1 + 1 + 6 + 10 + 40 + 3 + 65 + 540 = 666.

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 = 1161040365495 and 1161040365504.

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 63 ways as a sum of consecutive naturals, for example, 5030860 + ... + 5256579.

It is an arithmetic number, because the mean of its divisors is an integer number (21603624000).

Almost surely, 2^{1161040365540} is an apocalyptic number.

1161040365540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1161040365540 is an abundant number, since it is smaller than the sum of its proper divisors (2986855442460).

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

1161040365540 is a wasteful number, since it uses less digits than its factorization.

1161040365540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10287487 (or 10287479 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 1161040365540 in words is "one trillion, one hundred sixty-one billion, forty million, three hundred sixty-five thousand, five hundred forty".