64548929851 has 12 divisors (see below), whose sum is σ = 75131874648. Its totient is φ = 55294979712.

The previous prime is 64548929849. The next prime is 64548929857. The reversal of 64548929851 is 15892984546.

64548929851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64548929851 - 2¹ = 64548929849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64548929851.

It is not an unprimeable number, because it can be changed into a prime (64548929857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 304981 + ... + 471286.

It is an arithmetic number, because the mean of its divisors is an integer number (6260989554).

Almost surely, 2^64548929851 is an apocalyptic number.

64548929851 is a deficient number, since it is larger than the sum of its proper divisors (10582944797).

64548929851 is a wasteful number, since it uses less digits than its factorization.

64548929851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777978 (or 777971 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 61.

The spelling of 64548929851 in words is "sixty-four billion, five hundred forty-eight million, nine hundred twenty-nine thousand, eight hundred fifty-one".