1204111343155 has 16 divisors (see below), whose sum is σ = 1695983855040. Its totient is φ = 803360771712.

The previous prime is 1204111343137. The next prime is 1204111343177. The reversal of 1204111343155 is 5513431114021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1204111343155 - 2¹¹ = 1204111341107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 464906560 + ... + 464909149.

It is an arithmetic number, because the mean of its divisors is an integer number (105998990940).

Almost surely, 2^{1204111343155} is an apocalyptic number.

1204111343155 is a deficient number, since it is larger than the sum of its proper divisors (491872511885).

1204111343155 is an equidigital number, since it uses as much as digits as its factorization.

1204111343155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929815758.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 1204111343155 its reverse (5513431114021), we get a palindrome (6717542457176).

The spelling of 1204111343155 in words is "one trillion, two hundred four billion, one hundred eleven million, three hundred forty-three thousand, one hundred fifty-five".