1155006043665 has 16 divisors (see below), whose sum is σ = 1848414955776. Its totient is φ = 615868128000.

The previous prime is 1155006043579. The next prime is 1155006043759. The reversal of 1155006043665 is 5663406005511.

It is not a de Polignac number, because 1155006043665 - 2⁸ = 1155006043409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8372761 + ... + 8509590.

It is an arithmetic number, because the mean of its divisors is an integer number (115525934736).

Almost surely, 2^{1155006043665} is an apocalyptic number.

1155006043665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1155006043665 is a deficient number, since it is larger than the sum of its proper divisors (693408912111).

1155006043665 is a wasteful number, since it uses less digits than its factorization.

1155006043665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16886920.

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 1155006043665 in words is "one trillion, one hundred fifty-five billion, six million, forty-three thousand, six hundred sixty-five".