64894354322 has 18 divisors (see below), whose sum is σ = 113238426933. Its totient is φ = 27810785352.

The previous prime is 64894354309. The next prime is 64894354367. The reversal of 64894354322 is 22345349846.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 48364366561 + 16529987761 = 219919^2 + 128569^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=180131.

It is a super-2 number, since 2×64894354322² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2508968 + ... + 2534700.

Almost surely, 2^64894354322 is an apocalyptic number.

64894354322 is a deficient number, since it is larger than the sum of its proper divisors (48344072611).

64894354322 is an frugal number, since it uses more digits than its factorization.

64894354322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51482 (or 25742 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 50.

Multiplying 64894354322 by its sum of digits (50), we get a square (3244717716100 = 1801310²).

The spelling of 64894354322 in words is "sixty-four billion, eight hundred ninety-four million, three hundred fifty-four thousand, three hundred twenty-two".