1215305133144 has 32 divisors (see below), whose sum is σ = 3038979489840. Its totient is φ = 405006156800.

The previous prime is 1215305133137. The next prime is 1215305133149. The reversal of 1215305133144 is 4413315035121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215305133149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5868237 + ... + 6071804.

Almost surely, 2^{1215305133144} is an apocalyptic number.

It is an amenable number.

1215305133144 is an abundant number, since it is smaller than the sum of its proper divisors (1823674356696).

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

1215305133144 is a wasteful number, since it uses less digits than its factorization.

1215305133144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11944291 (or 11944287 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 1215305133144 in words is "one trillion, two hundred fifteen billion, three hundred five million, one hundred thirty-three thousand, one hundred forty-four".