5164550640 has 120 divisors (see below), whose sum is σ = 18098439840. Its totient is φ = 1317330432.

The previous prime is 5164550627. The next prime is 5164550641. The reversal of 5164550640 is 460554615.

5164550640 is a `hidden beast` number, since 5 + 1 + 6 + 4 + 5 + 5 + 0 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5164550595 and 5164550604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5164550641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139375 + ... + 172494.

It is an arithmetic number, because the mean of its divisors is an integer number (150820332).

Almost surely, 2^5164550640 is an apocalyptic number.

It is an amenable number.

5164550640 is an abundant number, since it is smaller than the sum of its proper divisors (12933889200).

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

5164550640 is a wasteful number, since it uses less digits than its factorization.

5164550640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311911 (or 311902 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 5164550640 is about 71864.8080773893. The cubic root of 5164550640 is about 1728.5323559100.

The spelling of 5164550640 in words is "five billion, one hundred sixty-four million, five hundred fifty thousand, six hundred forty".