64542044160 has 832 divisors, whose sum is σ = 255339025920. Its totient is φ = 15527116800.

The previous prime is 64542044131. The next prime is 64542044173. The reversal of 64542044160 is 6144024546.

64542044160 is a `hidden beast` number, since 6 + 454 + 2 + 0 + 44 + 160 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 492687295 + ... + 492687425.

Almost surely, 2^64542044160 is an apocalyptic number.

64542044160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64542044160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127669512960).

64542044160 is an abundant number, since it is smaller than the sum of its proper divisors (190796981760).

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

64542044160 is an equidigital number, since it uses as much as digits as its factorization.

64542044160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 64542044160 in words is "sixty-four billion, five hundred forty-two million, forty-four thousand, one hundred sixty".