1023204515512 has 16 divisors (see below), whose sum is σ = 1984663931400. Its totient is φ = 493960800480.

The previous prime is 1023204515393. The next prime is 1023204515513. The reversal of 1023204515512 is 2155154023201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023204515513) 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, 2205181914 + ... + 2205182377.

Almost surely, 2^{1023204515512} is an apocalyptic number.

It is an amenable number.

1023204515512 is a deficient number, since it is larger than the sum of its proper divisors (961459415888).

1023204515512 is a wasteful number, since it uses less digits than its factorization.

1023204515512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4410364326 (or 4410364322 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 1023204515512 its reverse (2155154023201), we get a palindrome (3178358538713).

The spelling of 1023204515512 in words is "one trillion, twenty-three billion, two hundred four million, five hundred fifteen thousand, five hundred twelve".