64454045446 has 32 divisors (see below), whose sum is σ = 122078845440. Its totient is φ = 24867908736.

The previous prime is 64454045437. The next prime is 64454045459.

64454045446 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 64454045396 and 64454045405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5881816 + ... + 5892763.

It is an arithmetic number, because the mean of its divisors is an integer number (3814963920).

Almost surely, 2^64454045446 is an apocalyptic number.

64454045446 is a deficient number, since it is larger than the sum of its proper divisors (57624799994).

64454045446 is a wasteful number, since it uses less digits than its factorization.

64454045446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11774628.

The product of its (nonzero) digits is 3686400, while the sum is 46.

It can be divided in two parts, 644540 and 45446, that added together give a palindrome (689986).

The spelling of 64454045446 in words is "sixty-four billion, four hundred fifty-four million, forty-five thousand, four hundred forty-six".