66506651106001 has 8 divisors (see below), whose sum is σ = 66994149388320. Its totient is φ = 66019182509088.

The previous prime is 66506651105963. The next prime is 66506651106029. The reversal of 66506651106001 is 10060115660566.

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 66506651106001 - 2²³ = 66506642717393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66506651106031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2914171 + ... + 11895616.

It is an arithmetic number, because the mean of its divisors is an integer number (8374268673540).

Almost surely, 2^{66506651106001} is an apocalyptic number.

It is an amenable number.

66506651106001 is a deficient number, since it is larger than the sum of its proper divisors (487498282319).

66506651106001 is a wasteful number, since it uses less digits than its factorization.

66506651106001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14842703.

The product of its (nonzero) digits is 194400, while the sum is 43.

Adding to 66506651106001 its reverse (10060115660566), we get a palindrome (76566766766567).

The spelling of 66506651106001 in words is "sixty-six trillion, five hundred six billion, six hundred fifty-one million, one hundred six thousand, one".