20404034323215 has 16 divisors (see below), whose sum is σ = 32652071167968. Its totient is φ = 10880279555456.

The previous prime is 20404034323207. The next prime is 20404034323237. The reversal of 20404034323215 is 51232343040402.

It is a cyclic number.

It is not a de Polignac number, because 20404034323215 - 2³ = 20404034323207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116915124 + ... + 117089513.

It is an arithmetic number, because the mean of its divisors is an integer number (2040754447998).

Almost surely, 2^{20404034323215} is an apocalyptic number.

20404034323215 is a deficient number, since it is larger than the sum of its proper divisors (12248036844753).

20404034323215 is a wasteful number, since it uses less digits than its factorization.

20404034323215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234010458.

The product of its (nonzero) digits is 69120, while the sum is 33.

Adding to 20404034323215 its reverse (51232343040402), we get a palindrome (71636377363617).

The spelling of 20404034323215 in words is "twenty trillion, four hundred four billion, thirty-four million, three hundred twenty-three thousand, two hundred fifteen".