328677281477 has 4 divisors (see below), whose sum is σ = 329592817440. Its totient is φ = 327761745516.

The previous prime is 328677281447. The next prime is 328677281483. The reversal of 328677281477 is 774182776823.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 774182776823 = 1171 ⋅661129613.

It is a cyclic number.

It is not a de Polignac number, because 328677281477 - 2³⁸ = 53799374533 is a prime.

It is a super-2 number, since 2×328677281477² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328677281407) 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, 457767443 + ... + 457768160.

It is an arithmetic number, because the mean of its divisors is an integer number (82398204360).

Almost surely, 2^328677281477 is an apocalyptic number.

It is an amenable number.

328677281477 is a deficient number, since it is larger than the sum of its proper divisors (915535963).

328677281477 is an equidigital number, since it uses as much as digits as its factorization.

328677281477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915535962.

The product of its digits is 44255232, while the sum is 62.

The spelling of 328677281477 in words is "three hundred twenty-eight billion, six hundred seventy-seven million, two hundred eighty-one thousand, four hundred seventy-seven".