1215041134154 has 32 divisors (see below), whose sum is σ = 1964230539264. Its totient is φ = 562332101760.

The previous prime is 1215041134141. The next prime is 1215041134157. The reversal of 1215041134154 is 4514311405121.

It is a self number, because there is not a number n which added to its sum of digits gives 1215041134154.

It is not an unprimeable number, because it can be changed into a prime (1215041134157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3235562 + ... + 3591509.

It is an arithmetic number, because the mean of its divisors is an integer number (61382204352).

Almost surely, 2^{1215041134154} is an apocalyptic number.

1215041134154 is a deficient number, since it is larger than the sum of its proper divisors (749189405110).

1215041134154 is a wasteful number, since it uses less digits than its factorization.

1215041134154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6827222.

The product of its (nonzero) digits is 9600, while the sum is 32.

Adding to 1215041134154 its reverse (4514311405121), we get a palindrome (5729352539275).

The spelling of 1215041134154 in words is "one trillion, two hundred fifteen billion, forty-one million, one hundred thirty-four thousand, one hundred fifty-four".