27287049644928 has 96 divisors (see below), whose sum is σ = 78523217572800. Its totient is φ = 9095464304640.

The previous prime is 27287049644927. The next prime is 27287049644947. The reversal of 27287049644928 is 82944694078272.

27287049644928 is a `hidden beast` number, since 2 + 7 + 2 + 8 + 7 + 0 + 496 + 44 + 92 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×27287049644928² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27287049644927) 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, 51716913 + ... + 52241871.

It is an arithmetic number, because the mean of its divisors is an integer number (817950183050).

Almost surely, 2^{27287049644928} is an apocalyptic number.

It is an amenable number.

27287049644928 is an abundant number, since it is smaller than the sum of its proper divisors (51236167927872).

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

27287049644928 is a wasteful number, since it uses less digits than its factorization.

27287049644928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570100 (or 570085 counting only the distinct ones).

The product of its (nonzero) digits is 780337152, while the sum is 72.

The spelling of 27287049644928 in words is "twenty-seven trillion, two hundred eighty-seven billion, forty-nine million, six hundred forty-four thousand, nine hundred twenty-eight".