1243064424665 has 24 divisors (see below), whose sum is σ = 1810953782592. Its totient is φ = 802246613760.

The previous prime is 1243064424647. The next prime is 1243064424673. The reversal of 1243064424665 is 5664244603421.

It is not a de Polignac number, because 1243064424665 - 2⁶ = 1243064424601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61436471 + ... + 61456700.

It is an arithmetic number, because the mean of its divisors is an integer number (75456407608).

Almost surely, 2^{1243064424665} is an apocalyptic number.

It is an amenable number.

1243064424665 is a deficient number, since it is larger than the sum of its proper divisors (567889357927).

1243064424665 is a wasteful number, since it uses less digits than its factorization.

1243064424665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122893217 (or 122893200 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 47.

The spelling of 1243064424665 in words is "one trillion, two hundred forty-three billion, sixty-four million, four hundred twenty-four thousand, six hundred sixty-five".