27650001387640 has 32 divisors (see below), whose sum is σ = 62608761118080. Its totient is φ = 10989554689152.

The previous prime is 27650001387607. The next prime is 27650001387643. The reversal of 27650001387640 is 4678310005672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27650001387643) by changing a digit.

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, 2201426952 + ... + 2201439511.

It is an arithmetic number, because the mean of its divisors is an integer number (1956523784940).

Almost surely, 2^{27650001387640} is an apocalyptic number.

27650001387640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27650001387640 is an abundant number, since it is smaller than the sum of its proper divisors (34958759730440).

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

27650001387640 is a wasteful number, since it uses less digits than its factorization.

27650001387640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4402866631 (or 4402866627 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 27650001387640 in words is "twenty-seven trillion, six hundred fifty billion, one million, three hundred eighty-seven thousand, six hundred forty".