27457381912 has 8 divisors (see below), whose sum is σ = 51482591100. Its totient is φ = 13728690952.

The previous prime is 27457381883. The next prime is 27457381927. The reversal of 27457381912 is 21918375472.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×27457381912² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1716086362 + ... + 1716086377.

Almost surely, 2^27457381912 is an apocalyptic number.

It is an amenable number.

27457381912 is a deficient number, since it is larger than the sum of its proper divisors (24025209188).

27457381912 is a wasteful number, since it uses less digits than its factorization.

27457381912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432172745 (or 3432172741 counting only the distinct ones).

The product of its digits is 846720, while the sum is 49.

The spelling of 27457381912 in words is "twenty-seven billion, four hundred fifty-seven million, three hundred eighty-one thousand, nine hundred twelve".