1215310310540 has 12 divisors (see below), whose sum is σ = 2552151652176. Its totient is φ = 486124124208.

The previous prime is 1215310310443. The next prime is 1215310310563. The reversal of 1215310310540 is 450130135121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30382757744 + ... + 30382757783.

It is an arithmetic number, because the mean of its divisors is an integer number (212679304348).

Almost surely, 2^{1215310310540} is an apocalyptic number.

1215310310540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1215310310540 is an abundant number, since it is smaller than the sum of its proper divisors (1336841341636).

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

1215310310540 is a wasteful number, since it uses less digits than its factorization.

1215310310540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60765515536 (or 60765515534 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 1215310310540 its reverse (450130135121), we get a palindrome (1665440445661).

The spelling of 1215310310540 in words is "one trillion, two hundred fifteen billion, three hundred ten million, three hundred ten thousand, five hundred forty".