646226449500239 has 16 divisors (see below), whose sum is σ = 673981278187392. Its totient is φ = 619110296483328.

The previous prime is 646226449500227. The next prime is 646226449500241. The reversal of 646226449500239 is 932005944622646.

It is a cyclic number.

It is not a de Polignac number, because 646226449500239 - 2⁴ = 646226449500223 is a prime.

It is a super-2 number, since 2×646226449500239² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646226449500259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298487804 + ... + 300645009.

It is an arithmetic number, because the mean of its divisors is an integer number (42123829886712).

Almost surely, 2^{646226449500239} is an apocalyptic number.

646226449500239 is a deficient number, since it is larger than the sum of its proper divisors (27754828687153).

646226449500239 is a wasteful number, since it uses less digits than its factorization.

646226449500239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599133346.

The product of its (nonzero) digits is 134369280, while the sum is 62.

The spelling of 646226449500239 in words is "six hundred forty-six trillion, two hundred twenty-six billion, four hundred forty-nine million, five hundred thousand, two hundred thirty-nine".