655621182812 has 12 divisors (see below), whose sum is σ = 1150587319056. Its totient is φ = 326881948800.

The previous prime is 655621182787. The next prime is 655621182889. The reversal of 655621182812 is 218281126556.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 232159064 + ... + 232161887.

It is an arithmetic number, because the mean of its divisors is an integer number (95882276588).

Almost surely, 2^655621182812 is an apocalyptic number.

It is an amenable number.

655621182812 is a deficient number, since it is larger than the sum of its proper divisors (494966136244).

655621182812 is a wasteful number, since it uses less digits than its factorization.

655621182812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464321308 (or 464321306 counting only the distinct ones).

The product of its digits is 460800, while the sum is 47.

The spelling of 655621182812 in words is "six hundred fifty-five billion, six hundred twenty-one million, one hundred eighty-two thousand, eight hundred twelve".