1215262808897 has 16 divisors (see below), whose sum is σ = 1254300613440. Its totient is φ = 1176557078592.

The previous prime is 1215262808863. The next prime is 1215262808909. The reversal of 1215262808897 is 7988082625121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1215262808897 - 2¹⁸ = 1215262546753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215262808807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14557358 + ... + 14640600.

It is an arithmetic number, because the mean of its divisors is an integer number (78393788340).

Almost surely, 2^{1215262808897} is an apocalyptic number.

It is an amenable number.

1215262808897 is a deficient number, since it is larger than the sum of its proper divisors (39037804543).

1215262808897 is a wasteful number, since it uses less digits than its factorization.

1215262808897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85232.

The product of its (nonzero) digits is 7741440, while the sum is 59.

The spelling of 1215262808897 in words is "one trillion, two hundred fifteen billion, two hundred sixty-two million, eight hundred eight thousand, eight hundred ninety-seven".