27205512442 has 4 divisors (see below), whose sum is σ = 40808268666. Its totient is φ = 13602756220.

The previous prime is 27205512431. The next prime is 27205512443. The reversal of 27205512442 is 24421550272.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21559342561 + 5646169881 = 146831^2 + 75141^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27205512398 and 27205512407.

It is not an unprimeable number, because it can be changed into a prime (27205512443) 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 as a sum of consecutive naturals, namely, 6801378109 + ... + 6801378112.

Almost surely, 2^27205512442 is an apocalyptic number.

27205512442 is a deficient number, since it is larger than the sum of its proper divisors (13602756224).

27205512442 is a wasteful number, since it uses less digits than its factorization.

27205512442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13602756223.

The product of its (nonzero) digits is 44800, while the sum is 34.

The spelling of 27205512442 in words is "twenty-seven billion, two hundred five million, five hundred twelve thousand, four hundred forty-two".