428323247512811 has 4 divisors (see below), whose sum is σ = 489512282871792. Its totient is φ = 367134212153832.

The previous prime is 428323247512729. The next prime is 428323247512829. The reversal of 428323247512811 is 118215742323824.

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 428323247512811 - 2³⁰ = 428322173770987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428323247517811) 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, 30594517679480 + ... + 30594517679493.

It is an arithmetic number, because the mean of its divisors is an integer number (122378070717948).

Almost surely, 2^{428323247512811} is an apocalyptic number.

428323247512811 is a deficient number, since it is larger than the sum of its proper divisors (61189035358981).

428323247512811 is an equidigital number, since it uses as much as digits as its factorization.

428323247512811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61189035358980.

The product of its digits is 5160960, while the sum is 53.

The spelling of 428323247512811 in words is "four hundred twenty-eight trillion, three hundred twenty-three billion, two hundred forty-seven million, five hundred twelve thousand, eight hundred eleven".