64206766533 has 32 divisors (see below), whose sum is σ = 105463993600. Its totient is φ = 33835470336.

The previous prime is 64206766529. The next prime is 64206766541. The reversal of 64206766533 is 33566760246.

It is not a de Polignac number, because 64206766533 - 2² = 64206766529 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64206766543) 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 31 ways as a sum of consecutive naturals, for example, 181833 + ... + 401841.

It is an arithmetic number, because the mean of its divisors is an integer number (3295749800).

Almost surely, 2^64206766533 is an apocalyptic number.

It is an amenable number.

64206766533 is a deficient number, since it is larger than the sum of its proper divisors (41257227067).

64206766533 is a wasteful number, since it uses less digits than its factorization.

64206766533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221101.

The product of its (nonzero) digits is 3265920, while the sum is 48.

The spelling of 64206766533 in words is "sixty-four billion, two hundred six million, seven hundred sixty-six thousand, five hundred thirty-three".