20466021469 has 4 divisors (see below), whose sum is σ = 20771484544. Its totient is φ = 20160558396.

The previous prime is 20466021461. The next prime is 20466021481. The reversal of 20466021469 is 96412066402.

It is a happy number.

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 20466021469 - 2³ = 20466021461 is a prime.

It is a super-2 number, since 2×20466021469² (a number of 21 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 (20466021461) 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, 152731437 + ... + 152731570.

It is an arithmetic number, because the mean of its divisors is an integer number (5192871136).

Almost surely, 2^20466021469 is an apocalyptic number.

It is an amenable number.

20466021469 is a deficient number, since it is larger than the sum of its proper divisors (305463075).

20466021469 is an equidigital number, since it uses as much as digits as its factorization.

20466021469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305463074.

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 20466021469 in words is "twenty billion, four hundred sixty-six million, twenty-one thousand, four hundred sixty-nine".