27800280280253 has 4 divisors (see below), whose sum is σ = 29938763378748. Its totient is φ = 25661797181760.

The previous prime is 27800280280183. The next prime is 27800280280273. The reversal of 27800280280253 is 35208208200872.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12187374245764 + 15612906034489 = 3491042^2 + 3951317^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27800280280253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27800280280198 and 27800280280207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27800280280273) 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, 1069241549228 + ... + 1069241549253.

It is an arithmetic number, because the mean of its divisors is an integer number (7484690844687).

Almost surely, 2^{27800280280253} is an apocalyptic number.

It is an amenable number.

27800280280253 is a deficient number, since it is larger than the sum of its proper divisors (2138483098495).

27800280280253 is a wasteful number, since it uses less digits than its factorization.

27800280280253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138483098494.

The product of its (nonzero) digits is 860160, while the sum is 47.

The spelling of 27800280280253 in words is "twenty-seven trillion, eight hundred billion, two hundred eighty million, two hundred eighty thousand, two hundred fifty-three".