1215107544680 has 32 divisors (see below), whose sum is σ = 2734087802400. Its totient is φ = 486025982016.

The previous prime is 1215107544661. The next prime is 1215107544689. The reversal of 1215107544680 is 864457015121.

It is not an unprimeable number, because it can be changed into a prime (1215107544689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655859 + ... + 1691261.

It is an arithmetic number, because the mean of its divisors is an integer number (85440243825).

Almost surely, 2^{1215107544680} is an apocalyptic number.

1215107544680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1215107544680 is an abundant number, since it is smaller than the sum of its proper divisors (1518980257720).

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

1215107544680 is a wasteful number, since it uses less digits than its factorization.

1215107544680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064753 (or 1064749 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 44.

The spelling of 1215107544680 in words is "one trillion, two hundred fifteen billion, one hundred seven million, five hundred forty-four thousand, six hundred eighty".