27831006286378 has 16 divisors (see below), whose sum is σ = 42215888904840. Its totient is φ = 13759045670656.

The previous prime is 27831006286373. The next prime is 27831006286403. The reversal of 27831006286378 is 87368260013872.

It can be written as a sum of positive squares in 4 ways, for example, as 20107125905409 + 7723880380969 = 4484097^2 + 2779187^2 .

It is not an unprimeable number, because it can be changed into a prime (27831006286373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26682600 + ... + 27706012.

Almost surely, 2^{27831006286378} is an apocalyptic number.

27831006286378 is a deficient number, since it is larger than the sum of its proper divisors (14384882618462).

27831006286378 is a wasteful number, since it uses less digits than its factorization.

27831006286378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176281.

The product of its (nonzero) digits is 32514048, while the sum is 61.

The spelling of 27831006286378 in words is "twenty-seven trillion, eight hundred thirty-one billion, six million, two hundred eighty-six thousand, three hundred seventy-eight".