27381021010 has 16 divisors (see below), whose sum is σ = 56326671936. Its totient is φ = 9387778608.

The previous prime is 27381021007. The next prime is 27381021023. The reversal of 27381021010 is 1012018372.

It is a happy number.

It is a super-2 number, since 2×27381021010² (a number of 22 digits) contains 22 as substring.

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, 195578652 + ... + 195578791.

It is an arithmetic number, because the mean of its divisors is an integer number (3520416996).

Almost surely, 2^27381021010 is an apocalyptic number.

27381021010 is an abundant number, since it is smaller than the sum of its proper divisors (28945650926).

27381021010 is a wasteful number, since it uses less digits than its factorization.

27381021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391157457.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 27381021010 its reverse (1012018372), we get a palindrome (28393039382).

The spelling of 27381021010 in words is "twenty-seven billion, three hundred eighty-one million, twenty-one thousand, ten".