66617150361 has 4 divisors (see below), whose sum is σ = 88822867152. Its totient is φ = 44411433572.

The previous prime is 66617150359. The next prime is 66617150399. The reversal of 66617150361 is 16305171666.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66617150361 - 2¹ = 66617150359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66617150321) 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 3 ways as a sum of consecutive naturals, for example, 11102858391 + ... + 11102858396.

It is an arithmetic number, because the mean of its divisors is an integer number (22205716788).

Almost surely, 2^66617150361 is an apocalyptic number.

It is an amenable number.

66617150361 is a deficient number, since it is larger than the sum of its proper divisors (22205716791).

66617150361 is a wasteful number, since it uses less digits than its factorization.

66617150361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22205716790.

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 66617150361 in words is "sixty-six billion, six hundred seventeen million, one hundred fifty thousand, three hundred sixty-one".