646522434025403 has 8 divisors (see below), whose sum is σ = 737211101241888. Its totient is φ = 561684648564864.

The previous prime is 646522434025367. The next prime is 646522434025421. The reversal of 646522434025403 is 304520434225646.

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

It is not a de Polignac number, because 646522434025403 - 2²⁴ = 646522417248187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (646522434025463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1462720438751 + ... + 1462720439192.

It is an arithmetic number, because the mean of its divisors is an integer number (92151387655236).

Almost surely, 2^{646522434025403} is an apocalyptic number.

646522434025403 is a deficient number, since it is larger than the sum of its proper divisors (90688667216485).

646522434025403 is a wasteful number, since it uses less digits than its factorization.

646522434025403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2925440877973.

The product of its (nonzero) digits is 16588800, while the sum is 50.

The spelling of 646522434025403 in words is "six hundred forty-six trillion, five hundred twenty-two billion, four hundred thirty-four million, twenty-five thousand, four hundred three".