1215555504355 has 8 divisors (see below), whose sum is σ = 1469313807552. Its totient is φ = 965346268608.

The previous prime is 1215555504277. The next prime is 1215555504379. The reversal of 1215555504355 is 5534055555121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1215555504355 - 2⁹ = 1215555503843 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 887266107 + ... + 887267476.

It is an arithmetic number, because the mean of its divisors is an integer number (183664225944).

Almost surely, 2^{1215555504355} is an apocalyptic number.

1215555504355 is a deficient number, since it is larger than the sum of its proper divisors (253758303197).

1215555504355 is a wasteful number, since it uses less digits than its factorization.

1215555504355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774533725.

The product of its (nonzero) digits is 1875000, while the sum is 46.

The spelling of 1215555504355 in words is "one trillion, two hundred fifteen billion, five hundred fifty-five million, five hundred four thousand, three hundred fifty-five".