1104520945561 has 16 divisors (see below), whose sum is σ = 1257437887488. Its totient is φ = 960363162000.

The previous prime is 1104520945543. The next prime is 1104520945579. The reversal of 1104520945561 is 1655490254011.

It is an interprime number because it is at equal distance from previous prime (1104520945543) and next prime (1104520945579).

It is not a de Polignac number, because 1104520945561 - 2¹⁵ = 1104520912793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1104520945501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2581036 + ... + 2978386.

It is an arithmetic number, because the mean of its divisors is an integer number (78589867968).

Almost surely, 2^{1104520945561} is an apocalyptic number.

1104520945561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1104520945561 is a deficient number, since it is larger than the sum of its proper divisors (152916941927).

1104520945561 is a wasteful number, since it uses less digits than its factorization.

1104520945561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408372.

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 1104520945561 in words is "one trillion, one hundred four billion, five hundred twenty million, nine hundred forty-five thousand, five hundred sixty-one".