66350480101 has 4 divisors (see below), whose sum is σ = 66351589900. Its totient is φ = 66349370304.

The previous prime is 66350480099. The next prime is 66350480117. The reversal of 66350480101 is 10108405366.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10108405366 = 2 ⋅5054202683.

It can be written as a sum of positive squares in 2 ways, for example, as 34808364900 + 31542115201 = 186570^2 + 177601^2 .

It is a cyclic number.

It is not a de Polignac number, because 66350480101 - 2¹ = 66350480099 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 (66350481101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459786 + ... + 586603.

It is an arithmetic number, because the mean of its divisors is an integer number (16587897475).

Almost surely, 2^66350480101 is an apocalyptic number.

It is an amenable number.

66350480101 is a deficient number, since it is larger than the sum of its proper divisors (1109799).

66350480101 is a wasteful number, since it uses less digits than its factorization.

66350480101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109798.

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 66350480101 its reverse (10108405366), we get a palindrome (76458885467).

The spelling of 66350480101 in words is "sixty-six billion, three hundred fifty million, four hundred eighty thousand, one hundred one".