1215333144745 has 16 divisors (see below), whose sum is σ = 1625461050240. Its totient is φ = 866912557824.

The previous prime is 1215333144737. The next prime is 1215333144761. The reversal of 1215333144745 is 5474413335121.

It is a cyclic number.

It is not a de Polignac number, because 1215333144745 - 2³ = 1215333144737 is a prime.

It is a super-2 number, since 2×1215333144745² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376262517 + ... + 376265746.

It is an arithmetic number, because the mean of its divisors is an integer number (101591315640).

Almost surely, 2^{1215333144745} is an apocalyptic number.

It is an amenable number.

1215333144745 is a deficient number, since it is larger than the sum of its proper divisors (410127905495).

1215333144745 is a wasteful number, since it uses less digits than its factorization.

1215333144745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752528304.

The product of its digits is 604800, while the sum is 43.

Adding to 1215333144745 its reverse (5474413335121), we get a palindrome (6689746479866).

The spelling of 1215333144745 in words is "one trillion, two hundred fifteen billion, three hundred thirty-three million, one hundred forty-four thousand, seven hundred forty-five".