64206440420822 has 16 divisors (see below), whose sum is σ = 115861245872640. Its totient is φ = 26068780321128.

The previous prime is 64206440420747. The next prime is 64206440420867. The reversal of 64206440420822 is 22802404460246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120688797518 + ... + 120688798049.

It is an arithmetic number, because the mean of its divisors is an integer number (7241327867040).

Almost surely, 2^{64206440420822} is an apocalyptic number.

64206440420822 is a deficient number, since it is larger than the sum of its proper divisors (51654805451818).

64206440420822 is a wasteful number, since it uses less digits than its factorization.

64206440420822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241377595595.

The product of its (nonzero) digits is 1179648, while the sum is 44.

The spelling of 64206440420822 in words is "sixty-four trillion, two hundred six billion, four hundred forty million, four hundred twenty thousand, eight hundred twenty-two".