1366427335680 has 1232 divisors, whose sum is σ = 5598224423424. Its totient is φ = 316633743360.

The previous prime is 1366427335633. The next prime is 1366427335723. The reversal of 1366427335680 is 865337246631.

1366427335680 is a `hidden beast` number, since 1 + 3 + 6 + 6 + 4 + 2 + 73 + 3 + 568 + 0 = 666.

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 111 ways as a sum of consecutive naturals, for example, 944316717 + ... + 944318163.

Almost surely, 2^{1366427335680} is an apocalyptic number.

1366427335680 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 1366427335680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2799112211712).

1366427335680 is an abundant number, since it is smaller than the sum of its proper divisors (4231797087744).

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

1366427335680 is a wasteful number, since it uses less digits than its factorization.

1366427335680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 54.

The spelling of 1366427335680 in words is "one trillion, three hundred sixty-six billion, four hundred twenty-seven million, three hundred thirty-five thousand, six hundred eighty".