1028664437323 has 4 divisors (see below), whose sum is σ = 1029610771840. Its totient is φ = 1027718102808.

The previous prime is 1028664437321. The next prime is 1028664437389. The reversal of 1028664437323 is 3237344668201.

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 1028664437323 - 2¹ = 1028664437321 is a prime.

It is a super-2 number, since 2×1028664437323² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028664437321) 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, 473165628 + ... + 473167801.

It is an arithmetic number, because the mean of its divisors is an integer number (257402692960).

Almost surely, 2^{1028664437323} is an apocalyptic number.

1028664437323 is a deficient number, since it is larger than the sum of its proper divisors (946334517).

1028664437323 is an equidigital number, since it uses as much as digits as its factorization.

1028664437323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946334516.

The product of its (nonzero) digits is 3483648, while the sum is 49.

The spelling of 1028664437323 in words is "one trillion, twenty-eight billion, six hundred sixty-four million, four hundred thirty-seven thousand, three hundred twenty-three".