1223817630840 has 1280 divisors, whose sum is σ = 5013093888000. Its totient is φ = 261900656640.

The previous prime is 1223817630809. The next prime is 1223817630877. The reversal of 1223817630840 is 480367183221.

1223817630840 is a `hidden beast` number, since 1 + 2 + 2 + 3 + 8 + 1 + 7 + 630 + 8 + 4 + 0 = 666.

It is a super-3 number, since 3×1223817630840³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 3408962581 + ... + 3408962939.

It is an arithmetic number, because the mean of its divisors is an integer number (3916479600).

Almost surely, 2^{1223817630840} is an apocalyptic number.

1223817630840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223817630840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2506546944000).

1223817630840 is an abundant number, since it is smaller than the sum of its proper divisors (3789276257160).

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

1223817630840 is a wasteful number, since it uses less digits than its factorization.

1223817630840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 1223817630840 in words is "one trillion, two hundred twenty-three billion, eight hundred seventeen million, six hundred thirty thousand, eight hundred forty".