1123740216656 has 40 divisors (see below), whose sum is σ = 2186399373984. Its totient is φ = 559509104000.

The previous prime is 1123740216637. The next prime is 1123740216661. The reversal of 1123740216656 is 6566120473211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19943435 + ... + 19999701.

Almost surely, 2^{1123740216656} is an apocalyptic number.

1123740216656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1123740216656 is a deficient number, since it is larger than the sum of its proper divisors (1062659157328).

1123740216656 is a wasteful number, since it uses less digits than its factorization.

1123740216656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61499 (or 61493 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

Adding to 1123740216656 its reverse (6566120473211), we get a palindrome (7689860689867).

The spelling of 1123740216656 in words is "one trillion, one hundred twenty-three billion, seven hundred forty million, two hundred sixteen thousand, six hundred fifty-six".