1101661155155 has 64 divisors (see below), whose sum is σ = 1538074137600. Its totient is φ = 749800235520.

The previous prime is 1101661155149. The next prime is 1101661155163. The reversal of 1101661155155 is 5515511661011.

It is not a de Polignac number, because 1101661155155 - 2¹⁴ = 1101661138771 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15485456 + ... + 15556434.

It is an arithmetic number, because the mean of its divisors is an integer number (24032408400).

Almost surely, 2^{1101661155155} is an apocalyptic number.

1101661155155 is a deficient number, since it is larger than the sum of its proper divisors (436412982445).

1101661155155 is a wasteful number, since it uses less digits than its factorization.

1101661155155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71324.

The product of its (nonzero) digits is 22500, while the sum is 38.

The spelling of 1101661155155 in words is "one trillion, one hundred one billion, six hundred sixty-one million, one hundred fifty-five thousand, one hundred fifty-five".