64133782347823 has 4 divisors (see below), whose sum is σ = 64459334542680. Its totient is φ = 63808230152968.

The previous prime is 64133782347797. The next prime is 64133782347863. The reversal of 64133782347823 is 32874328733146.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64133782347823 - 2⁹ = 64133782347311 is a prime.

It is a super-2 number, since 2×64133782347823² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64133782347863) 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, 162776097133 + ... + 162776097526.

It is an arithmetic number, because the mean of its divisors is an integer number (16114833635670).

Almost surely, 2^{64133782347823} is an apocalyptic number.

64133782347823 is a deficient number, since it is larger than the sum of its proper divisors (325552194857).

64133782347823 is a wasteful number, since it uses less digits than its factorization.

64133782347823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325552194856.

The product of its digits is 97542144, while the sum is 61.

The spelling of 64133782347823 in words is "sixty-four trillion, one hundred thirty-three billion, seven hundred eighty-two million, three hundred forty-seven thousand, eight hundred twenty-three".