55278653212 has 12 divisors (see below), whose sum is σ = 97476099336. Its totient is φ = 27428339120.

The previous prime is 55278653201. The next prime is 55278653233. The reversal of 55278653212 is 21235687255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52746283 + ... + 52747330.

It is an arithmetic number, because the mean of its divisors is an integer number (8123008278).

Almost surely, 2^55278653212 is an apocalyptic number.

It is an amenable number.

55278653212 is a deficient number, since it is larger than the sum of its proper divisors (42197446124).

55278653212 is a wasteful number, since it uses less digits than its factorization.

55278653212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105493748 (or 105493746 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 46.

The spelling of 55278653212 in words is "fifty-five billion, two hundred seventy-eight million, six hundred fifty-three thousand, two hundred twelve".