27664701720 has 32 divisors (see below), whose sum is σ = 82994105520. Its totient is φ = 7377253760.

The previous prime is 27664701671. The next prime is 27664701731. The reversal of 27664701720 is 2710746672.

It is a super-3 number, since 3×27664701720³ (a number of 32 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 115269471 + ... + 115269710.

Almost surely, 2^27664701720 is an apocalyptic number.

27664701720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27664701720 is an abundant number, since it is smaller than the sum of its proper divisors (55329403800).

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

27664701720 is a wasteful number, since it uses less digits than its factorization.

27664701720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230539195 (or 230539191 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 42.

The spelling of 27664701720 in words is "twenty-seven billion, six hundred sixty-four million, seven hundred one thousand, seven hundred twenty".