1551216610112 has 56 divisors (see below), whose sum is σ = 3316126805376. Its totient is φ = 715698390528.

The previous prime is 1551216610067. The next prime is 1551216610193. The reversal of 1551216610112 is 2110166121551.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2094173 + ... + 2736419.

It is an arithmetic number, because the mean of its divisors is an integer number (59216550096).

Almost surely, 2^{1551216610112} is an apocalyptic number.

It is an amenable number.

1551216610112 is an abundant number, since it is smaller than the sum of its proper divisors (1764910195264).

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

1551216610112 is a wasteful number, since it uses less digits than its factorization.

1551216610112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645175 (or 645165 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 32.

The spelling of 1551216610112 in words is "one trillion, five hundred fifty-one billion, two hundred sixteen million, six hundred ten thousand, one hundred twelve".