65771231753 has 4 divisors (see below), whose sum is σ = 65771750160. Its totient is φ = 65770713348.

The previous prime is 65771231749. The next prime is 65771231843. The reversal of 65771231753 is 35713217756.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 65771231753 - 2² = 65771231749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65771231698 and 65771231707.

It is not an unprimeable number, because it can be changed into a prime (65771231153) 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, 73178 + ... + 369996.

It is an arithmetic number, because the mean of its divisors is an integer number (16442937540).

Almost surely, 2^65771231753 is an apocalyptic number.

It is an amenable number.

65771231753 is a deficient number, since it is larger than the sum of its proper divisors (518407).

65771231753 is a wasteful number, since it uses less digits than its factorization.

65771231753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518406.

The product of its digits is 926100, while the sum is 47.

The spelling of 65771231753 in words is "sixty-five billion, seven hundred seventy-one million, two hundred thirty-one thousand, seven hundred fifty-three".