1081725811811 has 4 divisors (see below), whose sum is σ = 1081737738672. Its totient is φ = 1081713884952.

The previous prime is 1081725811807. The next prime is 1081725811849. The reversal of 1081725811811 is 1181185271801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1081725811811 - 2² = 1081725811807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081725811801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5826335 + ... + 6009128.

It is an arithmetic number, because the mean of its divisors is an integer number (270434434668).

Almost surely, 2^{1081725811811} is an apocalyptic number.

1081725811811 is a deficient number, since it is larger than the sum of its proper divisors (11926861).

1081725811811 is an equidigital number, since it uses as much as digits as its factorization.

1081725811811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11926860.

The product of its (nonzero) digits is 35840, while the sum is 44.

The spelling of 1081725811811 in words is "one trillion, eighty-one billion, seven hundred twenty-five million, eight hundred eleven thousand, eight hundred eleven".