64735240783 has 4 divisors (see below), whose sum is σ = 64736697960. Its totient is φ = 64733783608.

The previous prime is 64735240777. The next prime is 64735240819. The reversal of 64735240783 is 38704253746.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38704253746 = 2 ⋅19352126873.

It is a cyclic number.

It is not a de Polignac number, because 64735240783 - 2¹⁷ = 64735109711 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64735240723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659785 + ... + 751522.

It is an arithmetic number, because the mean of its divisors is an integer number (16184174490).

Almost surely, 2^64735240783 is an apocalyptic number.

64735240783 is a deficient number, since it is larger than the sum of its proper divisors (1457177).

64735240783 is a wasteful number, since it uses less digits than its factorization.

64735240783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457176.

The product of its (nonzero) digits is 3386880, while the sum is 49.

The spelling of 64735240783 in words is "sixty-four billion, seven hundred thirty-five million, two hundred forty thousand, seven hundred eighty-three".