1223728948464 has 120 divisors (see below), whose sum is σ = 3679218421200. Its totient is φ = 349013575680.

The previous prime is 1223728948441. The next prime is 1223728948523. The reversal of 1223728948464 is 4648498273221.

It is a junction number, because it is equal to n+sod(n) for n = 1223728948398 and 1223728948407.

It is a congruent 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, 6098239 + ... + 6295710.

It is an arithmetic number, because the mean of its divisors is an integer number (30660153510).

Almost surely, 2^{1223728948464} is an apocalyptic number.

It is an amenable number.

1223728948464 is an abundant number, since it is smaller than the sum of its proper divisors (2455489472736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223728948464 is a wasteful number, since it uses less digits than its factorization.

1223728948464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12393999 (or 12393982 counting only the distinct ones).

The product of its digits is 37158912, while the sum is 60.

The spelling of 1223728948464 in words is "one trillion, two hundred twenty-three billion, seven hundred twenty-eight million, nine hundred forty-eight thousand, four hundred sixty-four".