64406060446 has 32 divisors (see below), whose sum is σ = 119345607360. Its totient is φ = 25384582656.

The previous prime is 64406060441. The next prime is 64406060471.

It is a happy number.

64406060446 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 64406060399 and 64406060408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64406060441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 608811 + ... + 706726.

It is an arithmetic number, because the mean of its divisors is an integer number (3729550230).

Almost surely, 2^64406060446 is an apocalyptic number.

64406060446 is a deficient number, since it is larger than the sum of its proper divisors (54939546914).

64406060446 is a wasteful number, since it uses less digits than its factorization.

64406060446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315828.

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 64406060446 in words is "sixty-four billion, four hundred six million, sixty thousand, four hundred forty-six".