27800532885065 has 8 divisors (see below), whose sum is σ = 33372936064968. Its totient is φ = 22232228572800.

The previous prime is 27800532884989. The next prime is 27800532885109. The reversal of 27800532885065 is 56058823500872.

It can be written as a sum of positive squares in 4 ways, for example, as 9099223986064 + 18701308899001 = 3016492^2 + 4324501^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27800532885065 - 2¹⁴ = 27800532868681 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27800532884995 and 27800532885013.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1024701986 + ... + 1024729115.

It is an arithmetic number, because the mean of its divisors is an integer number (4171617008121).

Almost surely, 2^{27800532885065} is an apocalyptic number.

It is an amenable number.

27800532885065 is a deficient number, since it is larger than the sum of its proper divisors (5572403179903).

27800532885065 is a wasteful number, since it uses less digits than its factorization.

27800532885065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049433819.

The product of its (nonzero) digits is 32256000, while the sum is 59.

The spelling of 27800532885065 in words is "twenty-seven trillion, eight hundred billion, five hundred thirty-two million, eight hundred eighty-five thousand, sixty-five".