1155440325563 has 8 divisors (see below), whose sum is σ = 1195653363600. Its totient is φ = 1115251972128.

The previous prime is 1155440325553. The next prime is 1155440325581. The reversal of 1155440325563 is 3655230445511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1155440325563 - 2¹² = 1155440321467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155440325553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6075881 + ... + 6263162.

It is an arithmetic number, because the mean of its divisors is an integer number (149456670450).

Almost surely, 2^{1155440325563} is an apocalyptic number.

1155440325563 is a deficient number, since it is larger than the sum of its proper divisors (40213038037).

1155440325563 is a wasteful number, since it uses less digits than its factorization.

1155440325563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12342301.

The product of its (nonzero) digits is 1080000, while the sum is 44.

The spelling of 1155440325563 in words is "one trillion, one hundred fifty-five billion, four hundred forty million, three hundred twenty-five thousand, five hundred sixty-three".