1328755705394 has 16 divisors (see below), whose sum is σ = 2204463729048. Its totient is φ = 596696948352.

The previous prime is 1328755705373. The next prime is 1328755705397. The reversal of 1328755705394 is 4935075578231.

It can be written as a sum of positive squares in 4 ways, for example, as 1085670222025 + 243085483369 = 1041955^2 + 493037^2 .

It is not an unprimeable number, because it can be changed into a prime (1328755705397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690620507 + ... + 690622430.

Almost surely, 2^{1328755705394} is an apocalyptic number.

1328755705394 is a deficient number, since it is larger than the sum of its proper divisors (875708023654).

1328755705394 is a wasteful number, since it uses less digits than its factorization.

1328755705394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381242989.

The product of its (nonzero) digits is 31752000, while the sum is 59.

The spelling of 1328755705394 in words is "one trillion, three hundred twenty-eight billion, seven hundred fifty-five million, seven hundred five thousand, three hundred ninety-four".