64426638302 has 32 divisors (see below), whose sum is σ = 109091616480. Its totient is φ = 28335444480.

The previous prime is 64426638299. The next prime is 64426638307. The reversal of 64426638302 is 20383662446.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64426638307) 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 15 ways as a sum of consecutive naturals, for example, 656927 + ... + 748602.

It is an arithmetic number, because the mean of its divisors is an integer number (3409113015).

Almost surely, 2^64426638302 is an apocalyptic number.

64426638302 is a deficient number, since it is larger than the sum of its proper divisors (44664978178).

64426638302 is a wasteful number, since it uses less digits than its factorization.

64426638302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405628.

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 64426638302 in words is "sixty-four billion, four hundred twenty-six million, six hundred thirty-eight thousand, three hundred two".