64006444642 has 8 divisors (see below), whose sum is σ = 109725333696. Its totient is φ = 27431333412.

The previous prime is 64006444627. The next prime is 64006444657. The reversal of 64006444642 is 24644460046.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (64006444627) and next prime (64006444657).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 64006444595 and 64006444604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2285944438 + ... + 2285944465.

It is an arithmetic number, because the mean of its divisors is an integer number (13715666712).

Almost surely, 2^64006444642 is an apocalyptic number.

64006444642 is a deficient number, since it is larger than the sum of its proper divisors (45718889054).

64006444642 is a wasteful number, since it uses less digits than its factorization.

64006444642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4571888912.

The product of its (nonzero) digits is 442368, while the sum is 40.

The spelling of 64006444642 in words is "sixty-four billion, six million, four hundred forty-four thousand, six hundred forty-two".