428905032193 has 4 divisors (see below), whose sum is σ = 467896398768. Its totient is φ = 389913665620.

The previous prime is 428905032161. The next prime is 428905032233. The reversal of 428905032193 is 391230509824.

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.

It is a cyclic number.

It is not a de Polignac number, because 428905032193 - 2⁵ = 428905032161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428905032103) 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, 19495683271 + ... + 19495683292.

It is an arithmetic number, because the mean of its divisors is an integer number (116974099692).

Almost surely, 2^428905032193 is an apocalyptic number.

It is an amenable number.

428905032193 is a deficient number, since it is larger than the sum of its proper divisors (38991366575).

428905032193 is a wasteful number, since it uses less digits than its factorization.

428905032193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38991366574.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 428905032193 in words is "four hundred twenty-eight billion, nine hundred five million, thirty-two thousand, one hundred ninety-three".