64605164922 has 128 divisors (see below), whose sum is σ = 158942822400. Its totient is φ = 19360047168.

The previous prime is 64605164917. The next prime is 64605164927. The reversal of 64605164922 is 22946150646.

64605164922 is a `hidden beast` number, since 6 + 4 + 605 + 16 + 4 + 9 + 22 = 666.

64605164922 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64605164917) and next prime (64605164927).

It is not an unprimeable number, because it can be changed into a prime (64605164927) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2986168 + ... + 3007724.

It is an arithmetic number, because the mean of its divisors is an integer number (1241740800).

Almost surely, 2^64605164922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64605164922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79471411200).

64605164922 is an abundant number, since it is smaller than the sum of its proper divisors (94337657478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64605164922 is a wasteful number, since it uses less digits than its factorization.

64605164922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21737 (or 21731 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 64605164922 in words is "sixty-four billion, six hundred five million, one hundred sixty-four thousand, nine hundred twenty-two".