64309997246 has 16 divisors (see below), whose sum is σ = 106276470768. Its totient is φ = 28942392000.

The previous prime is 64309997203. The next prime is 64309997249. The reversal of 64309997246 is 64279990346.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64309997249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14468975 + ... + 14473418.

It is an arithmetic number, because the mean of its divisors is an integer number (6642279423).

Almost surely, 2^64309997246 is an apocalyptic number.

64309997246 is a deficient number, since it is larger than the sum of its proper divisors (41966473522).

64309997246 is a wasteful number, since it uses less digits than its factorization.

64309997246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28942507.

The product of its (nonzero) digits is 17635968, while the sum is 59.

The spelling of 64309997246 in words is "sixty-four billion, three hundred nine million, nine hundred ninety-seven thousand, two hundred forty-six".