28070342045 has 4 divisors (see below), whose sum is σ = 33684410460. Its totient is φ = 22456273632.

The previous prime is 28070342023. The next prime is 28070342143. The reversal of 28070342045 is 54024307082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54024307082 = 2 ⋅27012153541.

It can be written as a sum of positive squares in 2 ways, for example, as 16220060164 + 11850281881 = 127358^2 + 108859^2 .

It is a cyclic number.

It is not a de Polignac number, because 28070342045 - 2¹⁸ = 28070079901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28070341996 and 28070342014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2807034200 + ... + 2807034209.

It is an arithmetic number, because the mean of its divisors is an integer number (8421102615).

Almost surely, 2^28070342045 is an apocalyptic number.

It is an amenable number.

28070342045 is a deficient number, since it is larger than the sum of its proper divisors (5614068415).

28070342045 is an equidigital number, since it uses as much as digits as its factorization.

28070342045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5614068414.

The product of its (nonzero) digits is 53760, while the sum is 35.

The spelling of 28070342045 in words is "twenty-eight billion, seventy million, three hundred forty-two thousand, forty-five".