1204866109440 has 2080 divisors, whose sum is σ = 5358659665920. Its totient is φ = 252829237248.

The previous prime is 1204866109399. The next prime is 1204866109451. The reversal of 1204866109440 is 449016684021.

1204866109440 is a `hidden beast` number, since 1 + 2 + 0 + 48 + 66 + 109 + 440 = 666.

It is a super-2 number, since 2×1204866109440² (a number of 25 digits) contains 22 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 159 ways as a sum of consecutive naturals, for example, 9487134657 + ... + 9487134783.

Almost surely, 2^{1204866109440} is an apocalyptic number.

1204866109440 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 1204866109440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2679329832960).

1204866109440 is an abundant number, since it is smaller than the sum of its proper divisors (4153793556480).

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

1204866109440 is a wasteful number, since it uses less digits than its factorization.

1204866109440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 1204866109440 in words is "one trillion, two hundred four billion, eight hundred sixty-six million, one hundred nine thousand, four hundred forty".