20434323115 has 4 divisors (see below), whose sum is σ = 24521187744. Its totient is φ = 16347458488.

The previous prime is 20434323101. The next prime is 20434323121. The reversal of 20434323115 is 51132343402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20434323115 - 2⁹ = 20434322603 is a prime.

It is a super-2 number, since 2×20434323115² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2043432307 + ... + 2043432316.

It is an arithmetic number, because the mean of its divisors is an integer number (6130296936).

Almost surely, 2^20434323115 is an apocalyptic number.

20434323115 is a deficient number, since it is larger than the sum of its proper divisors (4086864629).

20434323115 is an equidigital number, since it uses as much as digits as its factorization.

20434323115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086864628.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20434323115 its reverse (51132343402), we get a palindrome (71566666517).

The spelling of 20434323115 in words is "twenty billion, four hundred thirty-four million, three hundred twenty-three thousand, one hundred fifteen".