27747535475 has 18 divisors (see below), whose sum is σ = 37819207020. Its totient is φ = 20180023600.

The previous prime is 27747535447. The next prime is 27747535483. The reversal of 27747535475 is 57453574772.

It is a de Polignac number, because none of the positive numbers 2^k-27747535475 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27747535475.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4583345 + ... + 4589394.

Almost surely, 2^27747535475 is an apocalyptic number.

27747535475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27747535475 is a deficient number, since it is larger than the sum of its proper divisors (10071671545).

27747535475 is a wasteful number, since it uses less digits than its factorization.

27747535475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9172771 (or 9172755 counting only the distinct ones).

The product of its digits is 28812000, while the sum is 56.

The spelling of 27747535475 in words is "twenty-seven billion, seven hundred forty-seven million, five hundred thirty-five thousand, four hundred seventy-five".