1155115645659 has 6 divisors (see below), whose sum is σ = 1668500377076. Its totient is φ = 770077097100.

The previous prime is 1155115645637. The next prime is 1155115645661. The reversal of 1155115645659 is 9565465115511.

1155115645659 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 1 + 15 + 64 + 565 + 9 = 666.

It is not a de Polignac number, because 1155115645659 - 2⁹ = 1155115645147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155115645609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64173091417 + ... + 64173091434.

Almost surely, 2^{1155115645659} is an apocalyptic number.

1155115645659 is a deficient number, since it is larger than the sum of its proper divisors (513384731417).

1155115645659 is a wasteful number, since it uses less digits than its factorization.

1155115645659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128346182857 (or 128346182854 counting only the distinct ones).

The product of its digits is 4050000, while the sum is 54.

The spelling of 1155115645659 in words is "one trillion, one hundred fifty-five billion, one hundred fifteen million, six hundred forty-five thousand, six hundred fifty-nine".