320440053554 has 4 divisors (see below), whose sum is σ = 480660080334. Its totient is φ = 160220026776.

The previous prime is 320440053553. The next prime is 320440053559. The reversal of 320440053554 is 455350044023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 309666651529 + 10773402025 = 556477^2 + 103795^2 .

It is not an unprimeable number, because it can be changed into a prime (320440053553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80110013387 + ... + 80110013390.

Almost surely, 2^320440053554 is an apocalyptic number.

320440053554 is a deficient number, since it is larger than the sum of its proper divisors (160220026780).

320440053554 is a wasteful number, since it uses less digits than its factorization.

320440053554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160220026779.

The product of its (nonzero) digits is 144000, while the sum is 35.

Adding to 320440053554 its reverse (455350044023), we get a palindrome (775790097577).

The spelling of 320440053554 in words is "three hundred twenty billion, four hundred forty million, fifty-three thousand, five hundred fifty-four".