1223434284656 has 20 divisors (see below), whose sum is σ = 2371291468704. Its totient is φ = 611488099200.

The previous prime is 1223434284647. The next prime is 1223434284691. The reversal of 1223434284656 is 6564824343221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14271125 + ... + 14356596.

Almost surely, 2^{1223434284656} is an apocalyptic number.

1223434284656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1223434284656 is a deficient number, since it is larger than the sum of its proper divisors (1147857184048).

1223434284656 is a wasteful number, since it uses less digits than its factorization.

1223434284656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28630400 (or 28630394 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 50.

The spelling of 1223434284656 in words is "one trillion, two hundred twenty-three billion, four hundred thirty-four million, two hundred eighty-four thousand, six hundred fifty-six".