69328469809 has 3 divisors (see below), whose sum is σ = 69328733113. Its totient is φ = 69328206506.

The previous prime is 69328469803. The next prime is 69328469863. The reversal of 69328469809 is 90896482396.

The square root of 69328469809 is 263303.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 69328469809 - 2²⁵ = 69294915377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69328469803) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 131652 + ... + 394954.

Almost surely, 2^69328469809 is an apocalyptic number.

69328469809 is the 263303-rd square number.

69328469809 is the 131652-nd centered octagonal number.

It is an amenable number.

69328469809 is a deficient number, since it is larger than the sum of its proper divisors (263304).

69328469809 is an frugal number, since it uses more digits than its factorization.

69328469809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526606 (or 263303 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 64.

Multiplying 69328469809 by its sum of digits (64), we get a square (4437022067776 = 2106424²).

The spelling of 69328469809 in words is "sixty-nine billion, three hundred twenty-eight million, four hundred sixty-nine thousand, eight hundred nine".