27780250033 has 4 divisors (see below), whose sum is σ = 28304405748. Its totient is φ = 27256094320.

The previous prime is 27780250031. The next prime is 27780250067. The reversal of 27780250033 is 33005208772.

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 11694908449 + 16085341584 = 108143^2 + 126828^2 .

It is a cyclic number.

It is not a de Polignac number, because 27780250033 - 2¹ = 27780250031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27780249974 and 27780250001.

It is not an unprimeable number, because it can be changed into a prime (27780250031) 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, 262077778 + ... + 262077883.

It is an arithmetic number, because the mean of its divisors is an integer number (7076101437).

Almost surely, 2^27780250033 is an apocalyptic number.

It is an amenable number.

27780250033 is a deficient number, since it is larger than the sum of its proper divisors (524155715).

27780250033 is an equidigital number, since it uses as much as digits as its factorization.

27780250033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524155714.

The product of its (nonzero) digits is 70560, while the sum is 37.

The spelling of 27780250033 in words is "twenty-seven billion, seven hundred eighty million, two hundred fifty thousand, thirty-three".