1215445213055 has 8 divisors (see below), whose sum is σ = 1458542508192. Its totient is φ = 972350668768.

The previous prime is 1215445213019. The next prime is 1215445213061. The reversal of 1215445213055 is 5503125445121.

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 1215445213055 - 2¹⁴ = 1215445196671 is a prime.

It is a Duffinian number.

It is a congruent 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, 457814 + ... + 1624956.

It is an arithmetic number, because the mean of its divisors is an integer number (182317813524).

Almost surely, 2^{1215445213055} is an apocalyptic number.

1215445213055 is a deficient number, since it is larger than the sum of its proper divisors (243097295137).

1215445213055 is a wasteful number, since it uses less digits than its factorization.

1215445213055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375425.

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 1215445213055 in words is "one trillion, two hundred fifteen billion, four hundred forty-five million, two hundred thirteen thousand, fifty-five".