646454141454646 has 16 divisors (see below), whose sum is σ = 1108812346594560. Its totient is φ = 276900463169640.

The previous prime is 646454141454629. The next prime is 646454141454677.

646454141454646 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12609285076 + ... + 12609336343.

It is an arithmetic number, because the mean of its divisors is an integer number (69300771662160).

Almost surely, 2^{646454141454646} is an apocalyptic number.

646454141454646 is a deficient number, since it is larger than the sum of its proper divisors (462358205139914).

646454141454646 is a wasteful number, since it uses less digits than its factorization.

646454141454646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25218623259.

The product of its digits is 530841600, while the sum is 64.

The spelling of 646454141454646 in words is "six hundred forty-six trillion, four hundred fifty-four billion, one hundred forty-one million, four hundred fifty-four thousand, six hundred forty-six".