64263142144 has 72 divisors (see below), whose sum is σ = 136733788800. Its totient is φ = 30038212608.

The previous prime is 64263142121. The next prime is 64263142169. The reversal of 64263142144 is 44124136246.

64263142144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598897 + ... + 697999.

It is an arithmetic number, because the mean of its divisors is an integer number (1899080400).

Almost surely, 2^64263142144 is an apocalyptic number.

64263142144 is a gapful number since it is divisible by the number (64) 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 64263142144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68366894400).

64263142144 is an abundant number, since it is smaller than the sum of its proper divisors (72470646656).

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

64263142144 is a wasteful number, since it uses less digits than its factorization.

64263142144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99285 (or 99271 counting only the distinct ones).

The product of its digits is 110592, while the sum is 37.

The spelling of 64263142144 in words is "sixty-four billion, two hundred sixty-three million, one hundred forty-two thousand, one hundred forty-four".