20434440101 has 8 divisors (see below), whose sum is σ = 20718642840. Its totient is φ = 20150353152.

The previous prime is 20434440073. The next prime is 20434440109. The reversal of 20434440101 is 10104443402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6658723201 + 13775716900 = 81601^2 + 117370^2 .

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 20434440101 - 2³⁰ = 19360698277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434440109) 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, 363065 + ... + 415553.

It is an arithmetic number, because the mean of its divisors is an integer number (2589830355).

Almost surely, 2^20434440101 is an apocalyptic number.

It is an amenable number.

20434440101 is a deficient number, since it is larger than the sum of its proper divisors (284202739).

20434440101 is an equidigital number, since it uses as much as digits as its factorization.

20434440101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57895.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20434440101 its reverse (10104443402), we get a palindrome (30538883503).

The spelling of 20434440101 in words is "twenty billion, four hundred thirty-four million, four hundred forty thousand, one hundred one".