1213445142155 has 8 divisors (see below), whose sum is σ = 1456457280432. Its totient is φ = 970540707168.

The previous prime is 1213445142127. The next prime is 1213445142179. The reversal of 1213445142155 is 5512415443121.

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 1213445142155 - 2⁸ = 1213445141899 is a prime.

It is a super-3 number, since 3×1213445142155³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26901032 + ... + 26946101.

It is an arithmetic number, because the mean of its divisors is an integer number (182057160054).

Almost surely, 2^{1213445142155} is an apocalyptic number.

1213445142155 is a deficient number, since it is larger than the sum of its proper divisors (243012138277).

1213445142155 is an equidigital number, since it uses as much as digits as its factorization.

1213445142155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53851645.

The product of its digits is 96000, while the sum is 38.

The spelling of 1213445142155 in words is "one trillion, two hundred thirteen billion, four hundred forty-five million, one hundred forty-two thousand, one hundred fifty-five".