64289199321 has 6 divisors (see below), whose sum is σ = 92862176810. Its totient is φ = 42859466208.

The previous prime is 64289199313. The next prime is 64289199329. The reversal of 64289199321 is 12399198246.

64289199321 is a `hidden beast` number, since 6 + 428 + 9 + 199 + 3 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (64289199313) and next prime (64289199329).

It can be written as a sum of positive squares in only one way, i.e., 64140627600 + 148571721 = 253260^2 + 12189^2 .

It is not a de Polignac number, because 64289199321 - 2³ = 64289199313 is a prime.

It is a super-2 number, since 2×64289199321² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64289199329) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3571622176 + ... + 3571622193.

Almost surely, 2^64289199321 is an apocalyptic number.

It is an amenable number.

64289199321 is a deficient number, since it is larger than the sum of its proper divisors (28572977489).

64289199321 is a wasteful number, since it uses less digits than its factorization.

64289199321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7143244375 (or 7143244372 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The spelling of 64289199321 in words is "sixty-four billion, two hundred eighty-nine million, one hundred ninety-nine thousand, three hundred twenty-one".