1204513655993 has 2 divisors, whose sum is σ = 1204513655994. Its totient is φ = 1204513655992.

The previous prime is 1204513655957. The next prime is 1204513656019. The reversal of 1204513655993 is 3995563154021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 630240691129 + 574272964864 = 793877^2 + 757808^2 .

It is an emirp because it is prime and its reverse (3995563154021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1204513655993 - 2¹⁰ = 1204513654969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1204513615993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602256827996 + 602256827997.

It is an arithmetic number, because the mean of its divisors is an integer number (602256827997).

Almost surely, 2^{1204513655993} is an apocalyptic number.

It is an amenable number.

1204513655993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204513655993 is an equidigital number, since it uses as much as digits as its factorization.

1204513655993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374000, while the sum is 53.

The spelling of 1204513655993 in words is "one trillion, two hundred four billion, five hundred thirteen million, six hundred fifty-five thousand, nine hundred ninety-three".