66006222401 has 8 divisors (see below), whose sum is σ = 75441925440. Its totient is φ = 56572080048.

The previous prime is 66006222397. The next prime is 66006222421. The reversal of 66006222401 is 10422260066.

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

It is a cyclic number.

It is not a de Polignac number, because 66006222401 - 2² = 66006222397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66006222421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298091 + ... + 469968.

It is an arithmetic number, because the mean of its divisors is an integer number (9430240680).

Almost surely, 2^66006222401 is an apocalyptic number.

It is an amenable number.

66006222401 is a deficient number, since it is larger than the sum of its proper divisors (9435703039).

66006222401 is a wasteful number, since it uses less digits than its factorization.

66006222401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780343.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 66006222401 its reverse (10422260066), we get a palindrome (76428482467).

The spelling of 66006222401 in words is "sixty-six billion, six million, two hundred twenty-two thousand, four hundred one".