20416206243345 has 64 divisors (see below), whose sum is σ = 37815185664000. Its totient is φ = 9307904291840.

The previous prime is 20416206243311. The next prime is 20416206243401. The reversal of 20416206243345 is 54334260261402.

It is a happy number.

It is not a de Polignac number, because 20416206243345 - 2⁷ = 20416206243217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20416206243297 and 20416206243306.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45367320 + ... + 45815129.

It is an arithmetic number, because the mean of its divisors is an integer number (590862276000).

Almost surely, 2^{20416206243345} is an apocalyptic number.

It is an amenable number.

20416206243345 is a deficient number, since it is larger than the sum of its proper divisors (17398979420655).

20416206243345 is a wasteful number, since it uses less digits than its factorization.

20416206243345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91182550.

The product of its (nonzero) digits is 829440, while the sum is 42.

The spelling of 20416206243345 in words is "twenty trillion, four hundred sixteen billion, two hundred six million, two hundred forty-three thousand, three hundred forty-five".