1551530115212 has 192 divisors, whose sum is σ = 3657830400000. Its totient is φ = 557546457600.

The previous prime is 1551530115203. The next prime is 1551530115251. The reversal of 1551530115212 is 2125110351551.

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 63 ways as a sum of consecutive naturals, for example, 119719589 + ... + 119732547.

It is an arithmetic number, because the mean of its divisors is an integer number (19051200000).

Almost surely, 2^{1551530115212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1551530115212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1828915200000).

1551530115212 is an abundant number, since it is smaller than the sum of its proper divisors (2106300284788).

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

1551530115212 is a wasteful number, since it uses less digits than its factorization.

1551530115212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13540 (or 13538 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 32.

Adding to 1551530115212 its reverse (2125110351551), we get a palindrome (3676640466763).

The spelling of 1551530115212 in words is "one trillion, five hundred fifty-one billion, five hundred thirty million, one hundred fifteen thousand, two hundred twelve".