27783481412261 has 8 divisors (see below), whose sum is σ = 28991557260864. Its totient is φ = 26575413763360.

The previous prime is 27783481412257. The next prime is 27783481412273. The reversal of 27783481412261 is 16221418438772.

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

It is not a de Polignac number, because 27783481412261 - 2² = 27783481412257 is a prime.

It is a super-2 number, since 2×27783481412261² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 27783481412197 and 27783481412206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27783411412261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5459441 + ... + 9239721.

It is an arithmetic number, because the mean of its divisors is an integer number (3623944657608).

Almost surely, 2^{27783481412261} is an apocalyptic number.

It is an amenable number.

27783481412261 is a deficient number, since it is larger than the sum of its proper divisors (1208075848603).

27783481412261 is a wasteful number, since it uses less digits than its factorization.

27783481412261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4099851.

The product of its digits is 7225344, while the sum is 56.

The spelling of 27783481412261 in words is "twenty-seven trillion, seven hundred eighty-three billion, four hundred eighty-one million, four hundred twelve thousand, two hundred sixty-one".