20434008869 has 8 divisors (see below), whose sum is σ = 21830521440. Its totient is φ = 19069600176.

The previous prime is 20434008863. The next prime is 20434008877. The reversal of 20434008869 is 96880043402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20434008869 - 2⁴ = 20434008853 is a prime.

It is a super-2 number, since 2×20434008869² (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 (20434008863) 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, 8024654 + ... + 8027199.

It is an arithmetic number, because the mean of its divisors is an integer number (2728815180).

Almost surely, 2^20434008869 is an apocalyptic number.

It is an amenable number.

20434008869 is a deficient number, since it is larger than the sum of its proper divisors (1396512571).

20434008869 is a wasteful number, since it uses less digits than its factorization.

20434008869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16051939.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 20434008869 in words is "twenty billion, four hundred thirty-four million, eight thousand, eight hundred sixty-nine".