64246309429 has 4 divisors (see below), whose sum is σ = 64246856076. Its totient is φ = 64245762784.

The previous prime is 64246309409. The next prime is 64246309481. The reversal of 64246309429 is 92490364246.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 62205348100 + 2040961329 = 249410^2 + 45177^2 .

It is a cyclic number.

It is not a de Polignac number, because 64246309429 - 2⁵ = 64246309397 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 (64246309409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16744 + ... + 358849.

It is an arithmetic number, because the mean of its divisors is an integer number (16061714019).

Almost surely, 2^64246309429 is an apocalyptic number.

It is an amenable number.

64246309429 is a deficient number, since it is larger than the sum of its proper divisors (546647).

64246309429 is a wasteful number, since it uses less digits than its factorization.

64246309429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546646.

The product of its (nonzero) digits is 2239488, while the sum is 49.

The spelling of 64246309429 in words is "sixty-four billion, two hundred forty-six million, three hundred nine thousand, four hundred twenty-nine".