654180019912 has 8 divisors (see below), whose sum is σ = 1226587537350. Its totient is φ = 327090009952.

The previous prime is 654180019907. The next prime is 654180019939. The reversal of 654180019912 is 219910081456.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 520813362276 + 133366657636 = 721674^2 + 365194^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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, 40886251237 + ... + 40886251252.

Almost surely, 2^654180019912 is an apocalyptic number.

It is an amenable number.

654180019912 is a deficient number, since it is larger than the sum of its proper divisors (572407517438).

654180019912 is a wasteful number, since it uses less digits than its factorization.

654180019912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81772502495 (or 81772502491 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 46.

The spelling of 654180019912 in words is "six hundred fifty-four billion, one hundred eighty million, nineteen thousand, nine hundred twelve".