1215043300455 has 64 divisors (see below), whose sum is σ = 2065413841920. Its totient is φ = 608622519296.

The previous prime is 1215043300433. The next prime is 1215043300481. The reversal of 1215043300455 is 5540033405121.

It is a cyclic number.

It is not a de Polignac number, because 1215043300455 - 2¹⁴ = 1215043284071 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17409409 + ... + 17479061.

It is an arithmetic number, because the mean of its divisors is an integer number (32272091280).

Almost surely, 2^{1215043300455} is an apocalyptic number.

1215043300455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1215043300455 is a deficient number, since it is larger than the sum of its proper divisors (850370541465).

1215043300455 is a wasteful number, since it uses less digits than its factorization.

1215043300455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70600.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 1215043300455 its reverse (5540033405121), we get a palindrome (6755076705576).

The spelling of 1215043300455 in words is "one trillion, two hundred fifteen billion, forty-three million, three hundred thousand, four hundred fifty-five".