65771736493 has 8 divisors (see below), whose sum is σ = 65946318336. Its totient is φ = 65597208000.

The previous prime is 65771736461. The next prime is 65771736497. The reversal of 65771736493 is 39463717756.

65771736493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 65771736493 - 2⁵ = 65771736461 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 (65771736497) 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, 4086580 + ... + 4102642.

It is an arithmetic number, because the mean of its divisors is an integer number (8243289792).

Almost surely, 2^65771736493 is an apocalyptic number.

It is an amenable number.

65771736493 is a deficient number, since it is larger than the sum of its proper divisors (174581843).

65771736493 is a wasteful number, since it uses less digits than its factorization.

65771736493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26675.

The product of its digits is 20003760, while the sum is 58.

The spelling of 65771736493 in words is "sixty-five billion, seven hundred seventy-one million, seven hundred thirty-six thousand, four hundred ninety-three".