27397631834 has 16 divisors (see below), whose sum is σ = 43523438400. Its totient is φ = 12890172864.

The previous prime is 27397631831. The next prime is 27397631881. The reversal of 27397631834 is 43813679372.

It is a super-2 number, since 2×27397631834² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27397631831) 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, 72977 + ... + 245195.

It is an arithmetic number, because the mean of its divisors is an integer number (2720214900).

Almost surely, 2^27397631834 is an apocalyptic number.

27397631834 is a deficient number, since it is larger than the sum of its proper divisors (16125806566).

27397631834 is a wasteful number, since it uses less digits than its factorization.

27397631834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176917.

The product of its digits is 4572288, while the sum is 53.

The spelling of 27397631834 in words is "twenty-seven billion, three hundred ninety-seven million, six hundred thirty-one thousand, eight hundred thirty-four".