64646446426 has 16 divisors (see below), whose sum is σ = 102187588608. Its totient is φ = 30611746000.

The previous prime is 64646446411. The next prime is 64646446441. The reversal of 64646446426 is 62464464646.

It is an interprime number because it is at equal distance from previous prime (64646446411) and next prime (64646446441).

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, 6952570 + ... + 6961861.

It is an arithmetic number, because the mean of its divisors is an integer number (6386724288).

Almost surely, 2^64646446426 is an apocalyptic number.

64646446426 is a deficient number, since it is larger than the sum of its proper divisors (37541142182).

64646446426 is a wasteful number, since it uses less digits than its factorization.

64646446426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13914557.

The product of its digits is 15925248, while the sum is 52.

The spelling of 64646446426 in words is "sixty-four billion, six hundred forty-six million, four hundred forty-six thousand, four hundred twenty-six".