64230783749 has 16 divisors (see below), whose sum is σ = 74219483520. Its totient is φ = 54936245760.

The previous prime is 64230783739. The next prime is 64230783791. The reversal of 64230783749 is 94738703246.

It is not a de Polignac number, because 64230783749 - 2¹² = 64230779653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64230783749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64230783739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447392 + ... + 573254.

It is an arithmetic number, because the mean of its divisors is an integer number (4638717720).

Almost surely, 2^64230783749 is an apocalyptic number.

It is an amenable number.

64230783749 is a deficient number, since it is larger than the sum of its proper divisors (9988699771).

64230783749 is a wasteful number, since it uses less digits than its factorization.

64230783749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128620.

The product of its (nonzero) digits is 6096384, while the sum is 53.

The spelling of 64230783749 in words is "sixty-four billion, two hundred thirty million, seven hundred eighty-three thousand, seven hundred forty-nine".