12270442678 has 16 divisors (see below), whose sum is σ = 20146429296. Its totient is φ = 5570439840.

The previous prime is 12270442663. The next prime is 12270442741. The reversal of 12270442678 is 87624407221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3866776 + ... + 3869947.

It is an arithmetic number, because the mean of its divisors is an integer number (1259151831).

Almost surely, 2^12270442678 is an apocalyptic number.

12270442678 is a deficient number, since it is larger than the sum of its proper divisors (7875986618).

12270442678 is a wasteful number, since it uses less digits than its factorization.

12270442678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7736799.

The product of its (nonzero) digits is 301056, while the sum is 43.

Adding to 12270442678 its reverse (87624407221), we get a palindrome (99894849899).

The spelling of 12270442678 in words is "twelve billion, two hundred seventy million, four hundred forty-two thousand, six hundred seventy-eight".