1326766055580 has 384 divisors, whose sum is σ = 4782177792000. Its totient is φ = 299118873600.

The previous prime is 1326766055557. The next prime is 1326766055599. The reversal of 1326766055580 is 855506676231.

It is a happy number.

1326766055580 is a `hidden beast` number, since 1 + 3 + 2 + 6 + 7 + 6 + 6 + 0 + 55 + 580 = 666.

It is a super-3 number, since 3×1326766055580³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 102692361 + ... + 102705279.

It is an arithmetic number, because the mean of its divisors is an integer number (12453588000).

Almost surely, 2^{1326766055580} is an apocalyptic number.

1326766055580 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 1326766055580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2391088896000).

1326766055580 is an abundant number, since it is smaller than the sum of its proper divisors (3455411736420).

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

1326766055580 is a wasteful number, since it uses less digits than its factorization.

1326766055580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13314 (or 13306 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 54.

The spelling of 1326766055580 in words is "one trillion, three hundred twenty-six billion, seven hundred sixty-six million, fifty-five thousand, five hundred eighty".