27985952103 has 4 divisors (see below), whose sum is σ = 37314602808. Its totient is φ = 18657301400.

The previous prime is 27985952101. The next prime is 27985952117. The reversal of 27985952103 is 30125958972.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27985952103 - 2¹ = 27985952101 is a prime.

It is a super-2 number, since 2×27985952103² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27985952101) 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 3 ways as a sum of consecutive naturals, for example, 4664325348 + ... + 4664325353.

It is an arithmetic number, because the mean of its divisors is an integer number (9328650702).

Almost surely, 2^27985952103 is an apocalyptic number.

27985952103 is a deficient number, since it is larger than the sum of its proper divisors (9328650705).

27985952103 is an equidigital number, since it uses as much as digits as its factorization.

27985952103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9328650704.

The product of its (nonzero) digits is 1360800, while the sum is 51.

The spelling of 27985952103 in words is "twenty-seven billion, nine hundred eighty-five million, nine hundred fifty-two thousand, one hundred three".