27006921648 has 60 divisors (see below), whose sum is σ = 86379284368. Its totient is φ = 7716263040.

The previous prime is 27006921647. The next prime is 27006921649. The reversal of 27006921648 is 84612960072.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27006921647) and next prime (27006921649).

It is a super-2 number, since 2×27006921648² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27006921647) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 13395283 + ... + 13397298.

Almost surely, 2^27006921648 is an apocalyptic number.

27006921648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27006921648 is an abundant number, since it is smaller than the sum of its proper divisors (59372362720).

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

27006921648 is a wasteful number, since it uses less digits than its factorization.

27006921648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26792602 (or 26792593 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 27006921648 in words is "twenty-seven billion, six million, nine hundred twenty-one thousand, six hundred forty-eight".