1551616666112 has 40 divisors (see below), whose sum is σ = 3101064596916. Its totient is φ = 775592681472.

The previous prime is 1551616666073. The next prime is 1551616666133. The reversal of 1551616666112 is 2116666161551.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 821589965056 + 730026701056 = 906416^2 + 854416^2 .

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, 1430468 + ... + 2269244.

Almost surely, 2^{1551616666112} is an apocalyptic number.

It is an amenable number.

1551616666112 is a deficient number, since it is larger than the sum of its proper divisors (1549447930804).

1551616666112 is an frugal number, since it uses more digits than its factorization.

1551616666112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842408 (or 842392 counting only the distinct ones).

The product of its digits is 388800, while the sum is 47.

The spelling of 1551616666112 in words is "one trillion, five hundred fifty-one billion, six hundred sixteen million, six hundred sixty-six thousand, one hundred twelve".