27147243640 has 32 divisors (see below), whose sum is σ = 66634144560. Its totient is φ = 9871724800.

The previous prime is 27147243637. The next prime is 27147243653. The reversal of 27147243640 is 4634274172.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 27147243593 and 27147243602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30848701 + ... + 30849580.

Almost surely, 2^27147243640 is an apocalyptic number.

27147243640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27147243640 is an abundant number, since it is smaller than the sum of its proper divisors (39486900920).

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

27147243640 is a wasteful number, since it uses less digits than its factorization.

27147243640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61698303 (or 61698299 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 40.

The spelling of 27147243640 in words is "twenty-seven billion, one hundred forty-seven million, two hundred forty-three thousand, six hundred forty".