1223793311615 has 16 divisors (see below), whose sum is σ = 1690595813952. Its totient is φ = 833047206144.

The previous prime is 1223793311581. The next prime is 1223793311647. The reversal of 1223793311615 is 5161133973221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1223793311615 - 2⁶ = 1223793311551 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 15 ways as a sum of consecutive naturals, for example, 127606604 + ... + 127616193.

It is an arithmetic number, because the mean of its divisors is an integer number (105662238372).

Almost surely, 2^{1223793311615} is an apocalyptic number.

1223793311615 is a deficient number, since it is larger than the sum of its proper divisors (466802502337).

1223793311615 is a wasteful number, since it uses less digits than its factorization.

1223793311615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255222946.

The product of its digits is 204120, while the sum is 44.

The spelling of 1223793311615 in words is "one trillion, two hundred twenty-three billion, seven hundred ninety-three million, three hundred eleven thousand, six hundred fifteen".