27285838647278 has 16 divisors (see below), whose sum is σ = 42029630832816. Its totient is φ = 13278219904320.

The previous prime is 27285838647161. The next prime is 27285838647307. The reversal of 27285838647278 is 87274683858272.

It is a junction number, because it is equal to n+sod(n) for n = 27285838647199 and 27285838647208.

It is a congruent number.

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, 564526001 + ... + 564574332.

It is an arithmetic number, because the mean of its divisors is an integer number (2626851927051).

Almost surely, 2^{27285838647278} is an apocalyptic number.

27285838647278 is a deficient number, since it is larger than the sum of its proper divisors (14743792185538).

27285838647278 is a wasteful number, since it uses less digits than its factorization.

27285838647278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129100659.

The product of its digits is 4046192640, while the sum is 77.

The spelling of 27285838647278 in words is "twenty-seven trillion, two hundred eighty-five billion, eight hundred thirty-eight million, six hundred forty-seven thousand, two hundred seventy-eight".