1327680340920 has 160 divisors (see below), whose sum is σ = 4697348792400. Its totient is φ = 335413965312.

The previous prime is 1327680340873. The next prime is 1327680340937. The reversal of 1327680340920 is 290430867231.

1327680340920 is a `hidden beast` number, since 13 + 276 + 8 + 0 + 340 + 9 + 20 = 666.

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 39 ways as a sum of consecutive naturals, for example, 10722069 + ... + 10845188.

Almost surely, 2^{1327680340920} is an apocalyptic number.

1327680340920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1327680340920 is an abundant number, since it is smaller than the sum of its proper divisors (3369668451480).

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

1327680340920 is a wasteful number, since it uses less digits than its factorization.

1327680340920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21567299 (or 21567286 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 1327680340920 in words is "one trillion, three hundred twenty-seven billion, six hundred eighty million, three hundred forty thousand, nine hundred twenty".