1081620944211 has 4 divisors (see below), whose sum is σ = 1442161258952. Its totient is φ = 721080629472.

The previous prime is 1081620944197. The next prime is 1081620944263. The reversal of 1081620944211 is 1124490261801.

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

It is not a de Polignac number, because 1081620944211 - 2¹¹ = 1081620942163 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1081620944211.

It is not an unprimeable number, because it can be changed into a prime (1081620944011) 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, 180270157366 + ... + 180270157371.

It is an arithmetic number, because the mean of its divisors is an integer number (360540314738).

Almost surely, 2^{1081620944211} is an apocalyptic number.

1081620944211 is a deficient number, since it is larger than the sum of its proper divisors (360540314741).

1081620944211 is an equidigital number, since it uses as much as digits as its factorization.

1081620944211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360540314740.

The product of its (nonzero) digits is 27648, while the sum is 39.

The spelling of 1081620944211 in words is "one trillion, eighty-one billion, six hundred twenty million, nine hundred forty-four thousand, two hundred eleven".