20434320415 has 8 divisors (see below), whose sum is σ = 24559442928. Its totient is φ = 16321950720.

The previous prime is 20434320397. The next prime is 20434320421. The reversal of 20434320415 is 51402343402.

It is a happy number.

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

It is not a de Polignac number, because 20434320415 - 2⁵ = 20434320383 is a prime.

It is a super-2 number, since 2×20434320415² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3184677 + ... + 3191086.

It is an arithmetic number, because the mean of its divisors is an integer number (3069930366).

Almost surely, 2^20434320415 is an apocalyptic number.

20434320415 is a deficient number, since it is larger than the sum of its proper divisors (4125122513).

20434320415 is an equidigital number, since it uses as much as digits as its factorization.

20434320415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6376409.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 20434320415 its reverse (51402343402), we get a palindrome (71836663817).

The spelling of 20434320415 in words is "twenty billion, four hundred thirty-four million, three hundred twenty thousand, four hundred fifteen".