66522640254101 has 8 divisors (see below), whose sum is σ = 66963410187264. Its totient is φ = 66081873250800.

The previous prime is 66522640254079. The next prime is 66522640254211. The reversal of 66522640254101 is 10145204622566.

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 66522640254101 - 2¹⁸ = 66522639991957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66522643254101) 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, 63321356 + ... + 64363338.

It is an arithmetic number, because the mean of its divisors is an integer number (8370426273408).

Almost surely, 2^{66522640254101} is an apocalyptic number.

It is an amenable number.

66522640254101 is a deficient number, since it is larger than the sum of its proper divisors (440769933163).

66522640254101 is a wasteful number, since it uses less digits than its factorization.

66522640254101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464931.

The product of its (nonzero) digits is 691200, while the sum is 44.

Adding to 66522640254101 its reverse (10145204622566), we get a palindrome (76667844876667).

The spelling of 66522640254101 in words is "sixty-six trillion, five hundred twenty-two billion, six hundred forty million, two hundred fifty-four thousand, one hundred one".