65420433217 has 8 divisors (see below), whose sum is σ = 66822710400. Its totient is φ = 64018587504.

The previous prime is 65420433193. The next prime is 65420433233. The reversal of 65420433217 is 71233402456.

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

It is a cyclic number.

It is not a de Polignac number, because 65420433217 - 2³¹ = 63272949569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65420433257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208459 + ... + 417487.

It is an arithmetic number, because the mean of its divisors is an integer number (8352838800).

Almost surely, 2^65420433217 is an apocalyptic number.

It is an amenable number.

65420433217 is a deficient number, since it is larger than the sum of its proper divisors (1402277183).

65420433217 is a wasteful number, since it uses less digits than its factorization.

65420433217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215735.

The product of its (nonzero) digits is 120960, while the sum is 37.

The spelling of 65420433217 in words is "sixty-five billion, four hundred twenty million, four hundred thirty-three thousand, two hundred seventeen".