646522323225646 has 96 divisors (see below), whose sum is σ = 1203867446676480. Its totient is φ = 259088245416000.

The previous prime is 646522323225617. The next prime is 646522323225707.

646522323225646 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×646522323225646² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10401 + ... + 35958931.

It is an arithmetic number, because the mean of its divisors is an integer number (12540285902880).

Almost surely, 2^{646522323225646} is an apocalyptic number.

646522323225646 is a deficient number, since it is larger than the sum of its proper divisors (557345123450834).

646522323225646 is a wasteful number, since it uses less digits than its factorization.

646522323225646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35948750 (or 35948743 counting only the distinct ones).

The product of its digits is 149299200, while the sum is 58.

The spelling of 646522323225646 in words is "six hundred forty-six trillion, five hundred twenty-two billion, three hundred twenty-three million, two hundred twenty-five thousand, six hundred forty-six".