1215229329648 has 60 divisors (see below), whose sum is σ = 3473315053728. Its totient is φ = 396457793280.

The previous prime is 1215229329637. The next prime is 1215229329649. The reversal of 1215229329648 is 8469239225121.

1215229329648 is a `hidden beast` number, since 1 + 2 + 1 + 522 + 93 + 29 + 6 + 4 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1215229329594 and 1215229329603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215229329649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89770813 + ... + 89784348.

Almost surely, 2^{1215229329648} is an apocalyptic number.

1215229329648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1215229329648 is an abundant number, since it is smaller than the sum of its proper divisors (2258085724080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1215229329648 is a wasteful number, since it uses less digits than its factorization.

1215229329648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179555222 (or 179555213 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The spelling of 1215229329648 in words is "one trillion, two hundred fifteen billion, two hundred twenty-nine million, three hundred twenty-nine thousand, six hundred forty-eight".