27731485075 has 18 divisors (see below), whose sum is σ = 40001254116. Its totient is φ = 19015874640.

The previous prime is 27731485039. The next prime is 27731485081. The reversal of 27731485075 is 57058413772.

It is a happy number.

It is not a de Polignac number, because 27731485075 - 2⁹ = 27731484563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 11317749 + ... + 11320198.

Almost surely, 2^27731485075 is an apocalyptic number.

27731485075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27731485075 is a deficient number, since it is larger than the sum of its proper divisors (12269769041).

27731485075 is a wasteful number, since it uses less digits than its factorization.

27731485075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22637971 (or 22637959 counting only the distinct ones).

The product of its (nonzero) digits is 1646400, while the sum is 49.

The spelling of 27731485075 in words is "twenty-seven billion, seven hundred thirty-one million, four hundred eighty-five thousand, seventy-five".