64985902873 has 16 divisors (see below), whose sum is σ = 69151653504. Its totient is φ = 60859019520.

The previous prime is 64985902847. The next prime is 64985902913. The reversal of 64985902873 is 37820958946.

It is a cyclic number.

It is not a de Polignac number, because 64985902873 - 2¹³ = 64985894681 is a prime.

It is a super-3 number, since 3×64985902873³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64985902573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2861503 + ... + 2884123.

It is an arithmetic number, because the mean of its divisors is an integer number (4321978344).

Almost surely, 2^64985902873 is an apocalyptic number.

It is an amenable number.

64985902873 is a deficient number, since it is larger than the sum of its proper divisors (4165750631).

64985902873 is a wasteful number, since it uses less digits than its factorization.

64985902873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23472.

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 64985902873 in words is "sixty-four billion, nine hundred eighty-five million, nine hundred two thousand, eight hundred seventy-three".