1105511385515 has 16 divisors (see below), whose sum is σ = 1394153400288. Its totient is φ = 840494382336.

The previous prime is 1105511385509. The next prime is 1105511385523. The reversal of 1105511385515 is 5155831155011.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1105511385515 - 2¹⁰ = 1105511384491 is a prime.

It is a Duffinian number.

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, 69477362 + ... + 69493271.

It is an arithmetic number, because the mean of its divisors is an integer number (87134587518).

Almost surely, 2^{1105511385515} is an apocalyptic number.

1105511385515 is a deficient number, since it is larger than the sum of its proper divisors (288642014773).

1105511385515 is a wasteful number, since it uses less digits than its factorization.

1105511385515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138970718.

The product of its (nonzero) digits is 75000, while the sum is 41.

The spelling of 1105511385515 in words is "one trillion, one hundred five billion, five hundred eleven million, three hundred eighty-five thousand, five hundred fifteen".