27871304787015 has 48 divisors (see below), whose sum is σ = 46626385373568. Its totient is φ = 14215621465408.

The previous prime is 27871304786989. The next prime is 27871304787143. The reversal of 27871304787015 is 51078740317872.

It is not a de Polignac number, because 27871304787015 - 2²⁵ = 27871271232583 is a prime.

It is a super-2 number, since 2×27871304787015² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27871304787015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40500232 + ... + 41182658.

It is an arithmetic number, because the mean of its divisors is an integer number (971383028616).

Almost surely, 2^{27871304787015} is an apocalyptic number.

27871304787015 is a deficient number, since it is larger than the sum of its proper divisors (18755080586553).

27871304787015 is a wasteful number, since it uses less digits than its factorization.

27871304787015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687628 (or 687605 counting only the distinct ones).

The product of its (nonzero) digits is 18439680, while the sum is 60.

The spelling of 27871304787015 in words is "twenty-seven trillion, eight hundred seventy-one billion, three hundred four million, seven hundred eighty-seven thousand, fifteen".