1215143225340 has 96 divisors (see below), whose sum is σ = 3736621324800. Its totient is φ = 292603104000.

The previous prime is 1215143225321. The next prime is 1215143225353. The reversal of 1215143225340 is 435223415121.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6079936 + ... + 6276615.

It is an arithmetic number, because the mean of its divisors is an integer number (38923138800).

Almost surely, 2^{1215143225340} is an apocalyptic number.

1215143225340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1215143225340 is an abundant number, since it is smaller than the sum of its proper divisors (2521478099460).

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

1215143225340 is a wasteful number, since it uses less digits than its factorization.

1215143225340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12356723 (or 12356721 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 1215143225340 in words is "one trillion, two hundred fifteen billion, one hundred forty-three million, two hundred twenty-five thousand, three hundred forty".