646171355241 has 12 divisors (see below), whose sum is σ = 933402201732. Its totient is φ = 430760790816.

The previous prime is 646171355231. The next prime is 646171355267. The reversal of 646171355241 is 142553171646.

It is a happy number.

646171355241 is a `hidden beast` number, since 6 + 4 + 617 + 1 + 3 + 5 + 5 + 24 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 77059539216 + 569111816025 = 277596^2 + 754395^2 .

It is not a de Polignac number, because 646171355241 - 2⁷ = 646171355113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (646171355231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1471266 + ... + 1859291.

It is an arithmetic number, because the mean of its divisors is an integer number (77783516811).

Almost surely, 2^646171355241 is an apocalyptic number.

It is an amenable number.

646171355241 is a deficient number, since it is larger than the sum of its proper divisors (287230846491).

646171355241 is a wasteful number, since it uses less digits than its factorization.

646171355241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3352120 (or 3352117 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The spelling of 646171355241 in words is "six hundred forty-six billion, one hundred seventy-one million, three hundred fifty-five thousand, two hundred forty-one".