646524232801 has 4 divisors (see below), whose sum is σ = 646538116912. Its totient is φ = 646510348692.

The previous prime is 646524232799. The next prime is 646524232813. The reversal of 646524232801 is 108232425646.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 646524232801 - 2¹ = 646524232799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646524232831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6871971 + ... + 6965416.

It is an arithmetic number, because the mean of its divisors is an integer number (161634529228).

Almost surely, 2^646524232801 is an apocalyptic number.

It is an amenable number.

646524232801 is a deficient number, since it is larger than the sum of its proper divisors (13884111).

646524232801 is a wasteful number, since it uses less digits than its factorization.

646524232801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13884110.

The product of its (nonzero) digits is 552960, while the sum is 43.

The spelling of 646524232801 in words is "six hundred forty-six billion, five hundred twenty-four million, two hundred thirty-two thousand, eight hundred one".