1215331150456 has 8 divisors (see below), whose sum is σ = 2278745907120. Its totient is φ = 607665575224.

The previous prime is 1215331150433. The next prime is 1215331150459. The reversal of 1215331150456 is 6540511335121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215331150459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75958196896 + ... + 75958196911.

It is an arithmetic number, because the mean of its divisors is an integer number (284843238390).

Almost surely, 2^{1215331150456} is an apocalyptic number.

It is an amenable number.

1215331150456 is a deficient number, since it is larger than the sum of its proper divisors (1063414756664).

1215331150456 is a wasteful number, since it uses less digits than its factorization.

1215331150456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151916393813 (or 151916393809 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

Adding to 1215331150456 its reverse (6540511335121), we get a palindrome (7755842485577).

The spelling of 1215331150456 in words is "one trillion, two hundred fifteen billion, three hundred thirty-one million, one hundred fifty thousand, four hundred fifty-six".