28058180611 has 4 divisors (see below), whose sum is σ = 28130310000. Its totient is φ = 27986051224.

The previous prime is 28058180599. The next prime is 28058180639. The reversal of 28058180611 is 11608185082.

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 28058180611 - 2⁷ = 28058180483 is a prime.

It is a super-2 number, since 2×28058180611² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28058180641) 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, 36064111 + ... + 36064888.

It is an arithmetic number, because the mean of its divisors is an integer number (7032577500).

Almost surely, 2^28058180611 is an apocalyptic number.

28058180611 is a deficient number, since it is larger than the sum of its proper divisors (72129389).

28058180611 is an equidigital number, since it uses as much as digits as its factorization.

28058180611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72129388.

The product of its (nonzero) digits is 30720, while the sum is 40.

The spelling of 28058180611 in words is "twenty-eight billion, fifty-eight million, one hundred eighty thousand, six hundred eleven".