64864771873 has 8 divisors (see below), whose sum is σ = 70879316256. Its totient is φ = 58869852000.

The previous prime is 64864771831. The next prime is 64864771919. The reversal of 64864771873 is 37817746846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64864771873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64864771813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4899211 + ... + 4912432.

It is an arithmetic number, because the mean of its divisors is an integer number (8859914532).

Almost surely, 2^64864771873 is an apocalyptic number.

It is an amenable number.

64864771873 is a deficient number, since it is larger than the sum of its proper divisors (6014544383).

64864771873 is a wasteful number, since it uses less digits than its factorization.

64864771873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9812255.

The product of its digits is 37933056, while the sum is 61.

The spelling of 64864771873 in words is "sixty-four billion, eight hundred sixty-four million, seven hundred seventy-one thousand, eight hundred seventy-three".