27801450122 has 4 divisors (see below), whose sum is σ = 41702175186. Its totient is φ = 13900725060.

The previous prime is 27801450067. The next prime is 27801450133. The reversal of 27801450122 is 22105410872.

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., 23289506881 + 4511943241 = 152609^2 + 67171^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6950362529 + ... + 6950362532.

Almost surely, 2^27801450122 is an apocalyptic number.

27801450122 is a deficient number, since it is larger than the sum of its proper divisors (13900725064).

27801450122 is a wasteful number, since it uses less digits than its factorization.

27801450122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13900725063.

The product of its (nonzero) digits is 8960, while the sum is 32.

Adding to 27801450122 its reverse (22105410872), we get a palindrome (49906860994).

The spelling of 27801450122 in words is "twenty-seven billion, eight hundred one million, four hundred fifty thousand, one hundred twenty-two".