1215750387312 has 120 divisors (see below), whose sum is σ = 3553597160880. Its totient is φ = 387614315520.

The previous prime is 1215750387251. The next prime is 1215750387353. The reversal of 1215750387312 is 2137830575121.

1215750387312 is a `hidden beast` number, since 1 + 2 + 1 + 57 + 503 + 87 + 3 + 12 = 666.

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 23 ways as a sum of consecutive naturals, for example, 1619389 + ... + 2248092.

It is an arithmetic number, because the mean of its divisors is an integer number (29613309674).

Almost surely, 2^{1215750387312} is an apocalyptic number.

1215750387312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1215750387312 is an abundant number, since it is smaller than the sum of its proper divisors (2337846773568).

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

1215750387312 is a wasteful number, since it uses less digits than its factorization.

1215750387312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3867591 (or 3867582 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The spelling of 1215750387312 in words is "one trillion, two hundred fifteen billion, seven hundred fifty million, three hundred eighty-seven thousand, three hundred twelve".