1155245450505 has 32 divisors (see below), whose sum is σ = 1893636396288. Its totient is φ = 601052236800.

The previous prime is 1155245450497. The next prime is 1155245450509. The reversal of 1155245450505 is 5050545425511.

It is a happy number.

It is not a de Polignac number, because 1155245450505 - 2³ = 1155245450497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1155245450509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7793037 + ... + 7939893.

It is an arithmetic number, because the mean of its divisors is an integer number (59176137384).

Almost surely, 2^{1155245450505} is an apocalyptic number.

1155245450505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1155245450505 is a deficient number, since it is larger than the sum of its proper divisors (738390945783).

1155245450505 is a wasteful number, since it uses less digits than its factorization.

1155245450505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159697.

The product of its (nonzero) digits is 500000, while the sum is 42.

The spelling of 1155245450505 in words is "one trillion, one hundred fifty-five billion, two hundred forty-five million, four hundred fifty thousand, five hundred five".