1215445240002 has 24 divisors (see below), whose sum is σ = 2827770559056. Its totient is φ = 347270068488.

The previous prime is 1215445239979. The next prime is 1215445240007. The reversal of 1215445240002 is 2000425445121.

It is not an unprimeable number, because it can be changed into a prime (1215445240007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2067083448 + ... + 2067084035.

It is an arithmetic number, because the mean of its divisors is an integer number (117823773294).

Almost surely, 2^{1215445240002} is an apocalyptic number.

1215445240002 is an abundant number, since it is smaller than the sum of its proper divisors (1612325319054).

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

1215445240002 is a wasteful number, since it uses less digits than its factorization.

1215445240002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134167502 (or 4134167495 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The spelling of 1215445240002 in words is "one trillion, two hundred fifteen billion, four hundred forty-five million, two hundred forty thousand, two".