646224262422646 has 16 divisors (see below), whose sum is σ = 974239791131376. Its totient is φ = 321481444491936.

The previous prime is 646224262422617. The next prime is 646224262422647.

646224262422646 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646224262422647) 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, 944435841 + ... + 945119836.

It is an arithmetic number, because the mean of its divisors is an integer number (60889986945711).

Almost surely, 2^{646224262422646} is an apocalyptic number.

646224262422646 is a deficient number, since it is larger than the sum of its proper divisors (328015528708730).

646224262422646 is a wasteful number, since it uses less digits than its factorization.

646224262422646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889556543.

The product of its digits is 127401984, while the sum is 58.

The spelling of 646224262422646 in words is "six hundred forty-six trillion, two hundred twenty-four billion, two hundred sixty-two million, four hundred twenty-two thousand, six hundred forty-six".