328121825157 has 32 divisors (see below), whose sum is σ = 555751123200. Its totient is φ = 187430367744.

The previous prime is 328121825131. The next prime is 328121825159. The reversal of 328121825157 is 751528121823.

328121825157 is a `hidden beast` number, since 3 + 2 + 8 + 121 + 8 + 2 + 515 + 7 = 666.

It is not a de Polignac number, because 328121825157 - 2⁷ = 328121825029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328121825159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212269 + ... + 837437.

It is an arithmetic number, because the mean of its divisors is an integer number (17367222600).

Almost surely, 2^328121825157 is an apocalyptic number.

It is an amenable number.

328121825157 is a deficient number, since it is larger than the sum of its proper divisors (227629298043).

328121825157 is a wasteful number, since it uses less digits than its factorization.

328121825157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627962 (or 627956 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The spelling of 328121825157 in words is "three hundred twenty-eight billion, one hundred twenty-one million, eight hundred twenty-five thousand, one hundred fifty-seven".