27164715985 has 24 divisors (see below), whose sum is σ = 36437829120. Its totient is φ = 19421281440.

The previous prime is 27164715979. The next prime is 27164715989. The reversal of 27164715985 is 58951746172.

It is not a de Polignac number, because 27164715985 - 2⁷ = 27164715857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (27164715989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 344817 + ... + 416206.

It is an arithmetic number, because the mean of its divisors is an integer number (1518242880).

Almost surely, 2^27164715985 is an apocalyptic number.

It is an amenable number.

27164715985 is a deficient number, since it is larger than the sum of its proper divisors (9273113135).

27164715985 is a wasteful number, since it uses less digits than its factorization.

27164715985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761109 (or 761098 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 55.

The spelling of 27164715985 in words is "twenty-seven billion, one hundred sixty-four million, seven hundred fifteen thousand, nine hundred eighty-five".