27947952687 has 8 divisors (see below), whose sum is σ = 37735632640. Its totient is φ = 18396120600.

The previous prime is 27947952679. The next prime is 27947952737. The reversal of 27947952687 is 78625974972.

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

It is not a de Polignac number, because 27947952687 - 2³ = 27947952679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27947952887) 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, 58961689 + ... + 58962162.

It is an arithmetic number, because the mean of its divisors is an integer number (4716954080).

Almost surely, 2^27947952687 is an apocalyptic number.

27947952687 is a deficient number, since it is larger than the sum of its proper divisors (9787679953).

27947952687 is a wasteful number, since it uses less digits than its factorization.

27947952687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117923933.

The product of its digits is 106686720, while the sum is 66.

The spelling of 27947952687 in words is "twenty-seven billion, nine hundred forty-seven million, nine hundred fifty-two thousand, six hundred eighty-seven".