1215395240241 has 64 divisors (see below), whose sum is σ = 2148293396480. Its totient is φ = 593221708800.

The previous prime is 1215395240239. The next prime is 1215395240261. The reversal of 1215395240241 is 1420425935121.

It is not a de Polignac number, because 1215395240241 - 2¹ = 1215395240239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1215395240241.

It is not an unprimeable number, because it can be changed into a prime (1215395240231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2501560 + ... + 2947641.

It is an arithmetic number, because the mean of its divisors is an integer number (33567084320).

Almost surely, 2^{1215395240241} is an apocalyptic number.

It is an amenable number.

1215395240241 is a deficient number, since it is larger than the sum of its proper divisors (932898156239).

1215395240241 is a wasteful number, since it uses less digits than its factorization.

1215395240241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449286.

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 1215395240241 in words is "one trillion, two hundred fifteen billion, three hundred ninety-five million, two hundred forty thousand, two hundred forty-one".