64644466004426 has 64 divisors (see below), whose sum is σ = 125079229071360. Its totient is φ = 24314373720000.

The previous prime is 64644466004407. The next prime is 64644466004453. The reversal of 64644466004426 is 62440066444646.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32120951 + ... + 34074101.

It is an arithmetic number, because the mean of its divisors is an integer number (1954362954240).

Almost surely, 2^{64644466004426} is an apocalyptic number.

64644466004426 is a deficient number, since it is larger than the sum of its proper divisors (60434763066934).

64644466004426 is a wasteful number, since it uses less digits than its factorization.

64644466004426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960611.

The product of its (nonzero) digits is 63700992, while the sum is 56.

The spelling of 64644466004426 in words is "sixty-four trillion, six hundred forty-four billion, four hundred sixty-six million, four thousand, four hundred twenty-six".