27705305475 has 48 divisors (see below), whose sum is σ = 50938351840. Its totient is φ = 14763772800.

The previous prime is 27705305471. The next prime is 27705305479. The reversal of 27705305475 is 57450350772.

27705305475 is a `hidden beast` number, since 2 + 7 + 70 + 5 + 30 + 547 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (27705305471) and next prime (27705305479).

It is not a de Polignac number, because 27705305475 - 2² = 27705305471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 27705305475.

It is not an unprimeable number, because it can be changed into a prime (27705305471) 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 47 ways as a sum of consecutive naturals, for example, 818385 + ... + 851565.

Almost surely, 2^27705305475 is an apocalyptic number.

27705305475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27705305475 is a deficient number, since it is larger than the sum of its proper divisors (23233046365).

27705305475 is a wasteful number, since it uses less digits than its factorization.

27705305475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34437 (or 34426 counting only the distinct ones).

The product of its (nonzero) digits is 1029000, while the sum is 45.

The spelling of 27705305475 in words is "twenty-seven billion, seven hundred five million, three hundred five thousand, four hundred seventy-five".