64222221085 has 16 divisors (see below), whose sum is σ = 86344964352. Its totient is φ = 45444715200.

The previous prime is 64222221079. The next prime is 64222221097. The reversal of 64222221085 is 58012222246.

It is not a de Polignac number, because 64222221085 - 2¹¹ = 64222219037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64222221085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15777381 + ... + 15781450.

It is an arithmetic number, because the mean of its divisors is an integer number (5396560272).

Almost surely, 2^64222221085 is an apocalyptic number.

It is an amenable number.

64222221085 is a deficient number, since it is larger than the sum of its proper divisors (22122743267).

64222221085 is a wasteful number, since it uses less digits than its factorization.

64222221085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31558884.

The product of its (nonzero) digits is 30720, while the sum is 34.

The spelling of 64222221085 in words is "sixty-four billion, two hundred twenty-two million, two hundred twenty-one thousand, eighty-five".