27493264720 has 20 divisors (see below), whose sum is σ = 63921840660. Its totient is φ = 10997305856.

The previous prime is 27493264709. The next prime is 27493264759. The reversal of 27493264720 is 2746239472.

It can be written as a sum of positive squares in 2 ways, for example, as 2763815184 + 24729449536 = 52572^2 + 157256^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 171832825 + ... + 171832984.

It is an arithmetic number, because the mean of its divisors is an integer number (3196092033).

Almost surely, 2^27493264720 is an apocalyptic number.

27493264720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27493264720 is an abundant number, since it is smaller than the sum of its proper divisors (36428575940).

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

27493264720 is a wasteful number, since it uses less digits than its factorization.

27493264720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343665822 (or 343665816 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 46.

The spelling of 27493264720 in words is "twenty-seven billion, four hundred ninety-three million, two hundred sixty-four thousand, seven hundred twenty".