27001995264 has 90 divisors (see below), whose sum is σ = 78003809520. Its totient is φ = 9000615936.

The previous prime is 27001995263. The next prime is 27001995329. The reversal of 27001995264 is 46259910072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27001995263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55897 + ... + 239015.

Almost surely, 2^27001995264 is an apocalyptic number.

27001995264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27001995264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39001904760).

27001995264 is an abundant number, since it is smaller than the sum of its proper divisors (51001814256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27001995264 is an equidigital number, since it uses as much as digits as its factorization.

27001995264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183153 (or 183124 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 27001995264 in words is "twenty-seven billion, one million, nine hundred ninety-five thousand, two hundred sixty-four".