64406244642202 has 4 divisors (see below), whose sum is σ = 96609366963306. Its totient is φ = 32203122321100.

The previous prime is 64406244642197. The next prime is 64406244642251. The reversal of 64406244642202 is 20224644260446.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 54670777572961 + 9735467069241 = 7393969^2 + 3120171^2 .

It is a super-2 number, since 2×64406244642202² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16101561160549 + ... + 16101561160552.

Almost surely, 2^{64406244642202} is an apocalyptic number.

64406244642202 is a deficient number, since it is larger than the sum of its proper divisors (32203122321104).

64406244642202 is a wasteful number, since it uses less digits than its factorization.

64406244642202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32203122321103.

The product of its (nonzero) digits is 3538944, while the sum is 46.

The spelling of 64406244642202 in words is "sixty-four trillion, four hundred six billion, two hundred forty-four million, six hundred forty-two thousand, two hundred two".