64212207263 has 4 divisors (see below), whose sum is σ = 64431361848. Its totient is φ = 63993052680.

The previous prime is 64212207259. The next prime is 64212207289. The reversal of 64212207263 is 36270221246.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64212207263 - 2² = 64212207259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64212207253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109576853 + ... + 109577438.

It is an arithmetic number, because the mean of its divisors is an integer number (16107840462).

Almost surely, 2^64212207263 is an apocalyptic number.

64212207263 is a deficient number, since it is larger than the sum of its proper divisors (219154585).

64212207263 is a wasteful number, since it uses less digits than its factorization.

64212207263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219154584.

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 64212207263 in words is "sixty-four billion, two hundred twelve million, two hundred seven thousand, two hundred sixty-three".