11021672005 has 4 divisors (see below), whose sum is σ = 13226006412. Its totient is φ = 8817337600.

The previous prime is 11021671963. The next prime is 11021672009. The reversal of 11021672005 is 50027612011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50027612011 = 13 ⋅3848277847.

It can be written as a sum of positive squares in 2 ways, for example, as 7088124481 + 3933547524 = 84191^2 + 62718^2 .

It is not a de Polignac number, because 11021672005 - 2¹¹ = 11021669957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021672009) 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, 1102167196 + ... + 1102167205.

It is an arithmetic number, because the mean of its divisors is an integer number (3306501603).

Almost surely, 2^11021672005 is an apocalyptic number.

It is an amenable number.

11021672005 is a deficient number, since it is larger than the sum of its proper divisors (2204334407).

11021672005 is an equidigital number, since it uses as much as digits as its factorization.

11021672005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204334406.

The product of its (nonzero) digits is 840, while the sum is 25.

The spelling of 11021672005 in words is "eleven billion, twenty-one million, six hundred seventy-two thousand, five".