64852778108 has 6 divisors (see below), whose sum is σ = 113492361696. Its totient is φ = 32426389052.

The previous prime is 64852778099. The next prime is 64852778141. The reversal of 64852778108 is 80187725846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8106597260 + ... + 8106597267.

It is an arithmetic number, because the mean of its divisors is an integer number (18915393616).

Almost surely, 2^64852778108 is an apocalyptic number.

It is an amenable number.

64852778108 is a deficient number, since it is larger than the sum of its proper divisors (48639583588).

64852778108 is a wasteful number, since it uses less digits than its factorization.

64852778108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16213194531 (or 16213194529 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 56.

The spelling of 64852778108 in words is "sixty-four billion, eight hundred fifty-two million, seven hundred seventy-eight thousand, one hundred eight".