64733547845 has 16 divisors (see below), whose sum is σ = 80840108160. Its totient is φ = 49701658944.

The previous prime is 64733547799. The next prime is 64733547847. The reversal of 64733547845 is 54874533746.

64733547845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 64733547845 - 2¹⁶ = 64733482309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64733547847) 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, 1312427 + ... + 1360856.

It is an arithmetic number, because the mean of its divisors is an integer number (5052506760).

Almost surely, 2^64733547845 is an apocalyptic number.

It is an amenable number.

64733547845 is a deficient number, since it is larger than the sum of its proper divisors (16106560315).

64733547845 is a wasteful number, since it uses less digits than its factorization.

64733547845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2673484.

The product of its digits is 33868800, while the sum is 56.

The spelling of 64733547845 in words is "sixty-four billion, seven hundred thirty-three million, five hundred forty-seven thousand, eight hundred forty-five".