1320694318080 has 264 divisors, whose sum is σ = 4579253451864. Its totient is φ = 351947980800.

The previous prime is 1320694318079. The next prime is 1320694318103. The reversal of 1320694318080 is 808134960231.

1320694318080 is a `hidden beast` number, since 1 + 3 + 2 + 0 + 69 + 431 + 80 + 80 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 151389471744 + 1169304846336 = 389088^2 + 1081344^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74686840 + ... + 74704520.

Almost surely, 2^{1320694318080} is an apocalyptic number.

1320694318080 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 1320694318080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2289626725932).

1320694318080 is an abundant number, since it is smaller than the sum of its proper divisors (3258559133784).

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

1320694318080 is a wasteful number, since it uses less digits than its factorization.

1320694318080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19333 (or 19312 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 1320694318080 in words is "one trillion, three hundred twenty billion, six hundred ninety-four million, three hundred eighteen thousand, eighty".