1100561561115 has 16 divisors (see below), whose sum is σ = 1760952316416. Its totient is φ = 586948226400.

The previous prime is 1100561561101. The next prime is 1100561561131. The reversal of 1100561561115 is 5111651650011.

It is not a de Polignac number, because 1100561561115 - 2⁵ = 1100561561083 is a prime.

It is a super-2 number, since 2×1100561561115² (a number of 25 digits) contains 22 as substring.

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, 606451 + ... + 1602780.

It is an arithmetic number, because the mean of its divisors is an integer number (110059519776).

Almost surely, 2^{1100561561115} is an apocalyptic number.

1100561561115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1100561561115 is a deficient number, since it is larger than the sum of its proper divisors (660390755301).

1100561561115 is a wasteful number, since it uses less digits than its factorization.

1100561561115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242450.

The product of its (nonzero) digits is 4500, while the sum is 33.

The spelling of 1100561561115 in words is "one trillion, one hundred billion, five hundred sixty-one million, five hundred sixty-one thousand, one hundred fifteen".