64256252012409 has 16 divisors (see below), whose sum is σ = 85764480528384. Its totient is φ = 42792763702800.

The previous prime is 64256252012327. The next prime is 64256252012423. The reversal of 64256252012409 is 90421025265246.

It is not a de Polignac number, because 64256252012409 - 2²³ = 64256243623801 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64256252010409) 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, 292678812 + ... + 292898274.

It is an arithmetic number, because the mean of its divisors is an integer number (5360280033024).

Almost surely, 2^{64256252012409} is an apocalyptic number.

It is an amenable number.

64256252012409 is a deficient number, since it is larger than the sum of its proper divisors (21508228515975).

64256252012409 is a wasteful number, since it uses less digits than its factorization.

64256252012409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320948.

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 64256252012409 in words is "sixty-four trillion, two hundred fifty-six billion, two hundred fifty-two million, twelve thousand, four hundred nine".