1204263665343 has 12 divisors (see below), whose sum is σ = 1745158062648. Its totient is φ = 800227319760.

The previous prime is 1204263665299. The next prime is 1204263665543. The reversal of 1204263665343 is 3435663624021.

1204263665343 is a `hidden beast` number, since 1 + 2 + 0 + 4 + 2 + 636 + 6 + 5 + 3 + 4 + 3 = 666.

It is not a de Polignac number, because 1204263665343 - 2²⁸ = 1203995229887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204263665243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 217924068 + ... + 217929593.

It is an arithmetic number, because the mean of its divisors is an integer number (145429838554).

Almost surely, 2^{1204263665343} is an apocalyptic number.

1204263665343 is a deficient number, since it is larger than the sum of its proper divisors (540894397305).

1204263665343 is a wasteful number, since it uses less digits than its factorization.

1204263665343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435853974 (or 435853971 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 45.

The spelling of 1204263665343 in words is "one trillion, two hundred four billion, two hundred sixty-three million, six hundred sixty-five thousand, three hundred forty-three".