1161105662555 has 16 divisors (see below), whose sum is σ = 1517234263200. Its totient is φ = 849651183360.

The previous prime is 1161105662503. The next prime is 1161105662579. The reversal of 1161105662555 is 5552665011611.

It is not a de Polignac number, because 1161105662555 - 2²⁰ = 1161104613979 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, 210724226 + ... + 210729735.

It is an arithmetic number, because the mean of its divisors is an integer number (94827141450).

Almost surely, 2^{1161105662555} is an apocalyptic number.

1161105662555 is a deficient number, since it is larger than the sum of its proper divisors (356128600645).

1161105662555 is a wasteful number, since it uses less digits than its factorization.

1161105662555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421454014.

The product of its (nonzero) digits is 270000, while the sum is 44.

The spelling of 1161105662555 in words is "one trillion, one hundred sixty-one billion, one hundred five million, six hundred sixty-two thousand, five hundred fifty-five".