1228950111679 has 4 divisors (see below), whose sum is σ = 1229261794576. Its totient is φ = 1228638428784.

The previous prime is 1228950111677. The next prime is 1228950111689. The reversal of 1228950111679 is 9761110598221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1228950111679 - 2¹ = 1228950111677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228950111677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155835534 + ... + 155843419.

It is an arithmetic number, because the mean of its divisors is an integer number (307315448644).

Almost surely, 2^{1228950111679} is an apocalyptic number.

1228950111679 is a deficient number, since it is larger than the sum of its proper divisors (311682897).

1228950111679 is an equidigital number, since it uses as much as digits as its factorization.

1228950111679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311682896.

The product of its (nonzero) digits is 544320, while the sum is 52.

The spelling of 1228950111679 in words is "one trillion, two hundred twenty-eight billion, nine hundred fifty million, one hundred eleven thousand, six hundred seventy-nine".