20346435906 has 16 divisors (see below), whose sum is σ = 41183148384. Its totient is φ = 6700432544.

The previous prime is 20346435899. The next prime is 20346435911. The reversal of 20346435906 is 60953464302.

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, 20427651 + ... + 20428646.

It is an arithmetic number, because the mean of its divisors is an integer number (2573946774).

Almost surely, 2^20346435906 is an apocalyptic number.

20346435906 is an abundant number, since it is smaller than the sum of its proper divisors (20836712478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20346435906 is a wasteful number, since it uses less digits than its factorization.

20346435906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40856385.

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 20346435906 in words is "twenty billion, three hundred forty-six million, four hundred thirty-five thousand, nine hundred six".