27442139220146 has 24 divisors (see below), whose sum is σ = 50700422883996. Its totient is φ = 11069098172160.

The previous prime is 27442139220143. The next prime is 27442139220157. The reversal of 27442139220146 is 64102293124472.

It can be written as a sum of positive squares in 2 ways, for example, as 27328899567025 + 113239653121 = 5227705^2 + 336511^2 .

It is a super-2 number, since 2×27442139220146² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27442139220146.

It is not an unprimeable number, because it can be changed into a prime (27442139220143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8235934475 + ... + 8235937806.

Almost surely, 2^{27442139220146} is an apocalyptic number.

27442139220146 is a deficient number, since it is larger than the sum of its proper divisors (23258283663850).

27442139220146 is a wasteful number, since it uses less digits than its factorization.

27442139220146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16471872314 (or 16471872307 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 47.

The spelling of 27442139220146 in words is "twenty-seven trillion, four hundred forty-two billion, one hundred thirty-nine million, two hundred twenty thousand, one hundred forty-six".