64664216101442 has 8 divisors (see below), whose sum is σ = 97134692662332. Its totient is φ = 32285985214000.

The previous prime is 64664216101417. The next prime is 64664216101477. The reversal of 64664216101442 is 24410161246646.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 63735457935601 + 928758165841 = 7983449^2 + 963721^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23061416609 + ... + 23061419412.

Almost surely, 2^{64664216101442} is an apocalyptic number.

64664216101442 is a deficient number, since it is larger than the sum of its proper divisors (32470476560890).

64664216101442 is a wasteful number, since it uses less digits than its factorization.

64664216101442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46122836724.

The product of its (nonzero) digits is 1327104, while the sum is 47.

The spelling of 64664216101442 in words is "sixty-four trillion, six hundred sixty-four billion, two hundred sixteen million, one hundred one thousand, four hundred forty-two".