64852601989 has 16 divisors (see below), whose sum is σ = 76851281920. Its totient is φ = 53553512880.

The previous prime is 64852601953. The next prime is 64852601993. The reversal of 64852601989 is 98910625846.

It is not a de Polignac number, because 64852601989 - 2¹⁹ = 64852077701 is a prime.

It is a super-2 number, since 2×64852601989² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64852601189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 621699 + ... + 718480.

It is an arithmetic number, because the mean of its divisors is an integer number (4803205120).

Almost surely, 2^64852601989 is an apocalyptic number.

It is an amenable number.

64852601989 is a deficient number, since it is larger than the sum of its proper divisors (11998679931).

64852601989 is a wasteful number, since it uses less digits than its factorization.

64852601989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340440.

The product of its (nonzero) digits is 7464960, while the sum is 58.

The spelling of 64852601989 in words is "sixty-four billion, eight hundred fifty-two million, six hundred one thousand, nine hundred eighty-nine".