20430343770 has 16 divisors (see below), whose sum is σ = 49032825120. Its totient is φ = 5448091664.

The previous prime is 20430343733. The next prime is 20430343771. The reversal of 20430343770 is 7734303402.

It is a super-3 number, since 3×20430343770³ (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20430343771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340505700 + ... + 340505759.

It is an arithmetic number, because the mean of its divisors is an integer number (3064551570).

Almost surely, 2^20430343770 is an apocalyptic number.

20430343770 is an abundant number, since it is smaller than the sum of its proper divisors (28602481350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20430343770 is a wasteful number, since it uses less digits than its factorization.

20430343770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681011469.

The product of its (nonzero) digits is 42336, while the sum is 33.

The spelling of 20430343770 in words is "twenty billion, four hundred thirty million, three hundred forty-three thousand, seven hundred seventy".