1123621315646 has 8 divisors (see below), whose sum is σ = 1717232576904. Its totient is φ = 551210456680.

The previous prime is 1123621315589. The next prime is 1123621315657. The reversal of 1123621315646 is 6465131263211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-5 number, since 5×1123621315646⁵ (a number of 61 digits) contains 55555 as substring.

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, 5300100440 + ... + 5300100651.

It is an arithmetic number, because the mean of its divisors is an integer number (214654072113).

Almost surely, 2^{1123621315646} is an apocalyptic number.

1123621315646 is a deficient number, since it is larger than the sum of its proper divisors (593611261258).

1123621315646 is a wasteful number, since it uses less digits than its factorization.

1123621315646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10600201146.

The product of its digits is 155520, while the sum is 41.

Adding to 1123621315646 its reverse (6465131263211), we get a palindrome (7588752578857).

The spelling of 1123621315646 in words is "one trillion, one hundred twenty-three billion, six hundred twenty-one million, three hundred fifteen thousand, six hundred forty-six".