66206285741 has 4 divisors (see below), whose sum is σ = 66209906400. Its totient is φ = 66202665084.

The previous prime is 66206285699. The next prime is 66206285771. The reversal of 66206285741 is 14758260266.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14758260266 = 2 ⋅7379130133.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66206285741 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 (66206285771) 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, 1782761 + ... + 1819518.

It is an arithmetic number, because the mean of its divisors is an integer number (16552476600).

Almost surely, 2^66206285741 is an apocalyptic number.

It is an amenable number.

66206285741 is a deficient number, since it is larger than the sum of its proper divisors (3620659).

66206285741 is a wasteful number, since it uses less digits than its factorization.

66206285741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3620658.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 66206285741 in words is "sixty-six billion, two hundred six million, two hundred eighty-five thousand, seven hundred forty-one".