55171212612 has 24 divisors (see below), whose sum is σ = 131872655712. Its totient is φ = 17941857600.

The previous prime is 55171212601. The next prime is 55171212697. The reversal of 55171212612 is 21621217155.

55171212612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 56067814 + ... + 56068797.

It is an arithmetic number, because the mean of its divisors is an integer number (5494693988).

Almost surely, 2^55171212612 is an apocalyptic number.

It is an amenable number.

55171212612 is an abundant number, since it is smaller than the sum of its proper divisors (76701443100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55171212612 is a wasteful number, since it uses less digits than its factorization.

55171212612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112136659 (or 112136657 counting only the distinct ones).

The product of its digits is 8400, while the sum is 33.

Adding to 55171212612 its reverse (21621217155), we get a palindrome (76792429767).

The spelling of 55171212612 in words is "fifty-five billion, one hundred seventy-one million, two hundred twelve thousand, six hundred twelve".