66919050241 has 4 divisors (see below), whose sum is σ = 66922028800. Its totient is φ = 66916071684.

The previous prime is 66919050199. The next prime is 66919050281. The reversal of 66919050241 is 14205091966.

66919050241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-66919050241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66919050281) 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, 1455321 + ... + 1500598.

It is an arithmetic number, because the mean of its divisors is an integer number (16730507200).

Almost surely, 2^66919050241 is an apocalyptic number.

It is an amenable number.

66919050241 is a deficient number, since it is larger than the sum of its proper divisors (2978559).

66919050241 is a wasteful number, since it uses less digits than its factorization.

66919050241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978558.

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 66919050241 in words is "sixty-six billion, nine hundred nineteen million, fifty thousand, two hundred forty-one".