646545321614033 has 8 divisors (see below), whose sum is σ = 646602293741160. Its totient is φ = 646488350807040.

The previous prime is 646545321614021. The next prime is 646545321614041. The reversal of 646545321614033 is 330416123545646.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 53302965588544 + 593242356025489 = 7300888^2 + 24356567^2 .

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 646545321614033 - 2³⁰ = 646544247872209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646545321619033) 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, 1153282391 + ... + 1153842867.

It is an arithmetic number, because the mean of its divisors is an integer number (80825286717645).

Almost surely, 2^{646545321614033} is an apocalyptic number.

It is an amenable number.

646545321614033 is a deficient number, since it is larger than the sum of its proper divisors (56972127127).

646545321614033 is a wasteful number, since it uses less digits than its factorization.

646545321614033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660067.

The product of its (nonzero) digits is 18662400, while the sum is 53.

The spelling of 646545321614033 in words is "six hundred forty-six trillion, five hundred forty-five billion, three hundred twenty-one million, six hundred fourteen thousand, thirty-three".