328557254399 has 4 divisors (see below), whose sum is σ = 358426095720. Its totient is φ = 298688413080.

The previous prime is 328557254303. The next prime is 328557254429. The reversal of 328557254399 is 993452755823.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 328557254399 - 2¹⁶ = 328557188863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328557254699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14934420644 + ... + 14934420665.

It is an arithmetic number, because the mean of its divisors is an integer number (89606523930).

Almost surely, 2^328557254399 is an apocalyptic number.

328557254399 is a deficient number, since it is larger than the sum of its proper divisors (29868841321).

328557254399 is a wasteful number, since it uses less digits than its factorization.

328557254399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29868841320.

The product of its digits is 81648000, while the sum is 62.

The spelling of 328557254399 in words is "three hundred twenty-eight billion, five hundred fifty-seven million, two hundred fifty-four thousand, three hundred ninety-nine".