64089949488 has 80 divisors (see below), whose sum is σ = 167967820800. Its totient is φ = 21054922240.

The previous prime is 64089949481. The next prime is 64089949519. The reversal of 64089949488 is 88494998046.

It is a super-3 number, since 3×64089949488³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (64089949481) 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, 1304473 + ... + 1352711.

It is an arithmetic number, because the mean of its divisors is an integer number (2099597760).

Almost surely, 2^64089949488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64089949488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83983910400).

64089949488 is an abundant number, since it is smaller than the sum of its proper divisors (103877871312).

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

64089949488 is a wasteful number, since it uses less digits than its factorization.

64089949488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48650 (or 48644 counting only the distinct ones).

The product of its (nonzero) digits is 143327232, while the sum is 69.

The spelling of 64089949488 in words is "sixty-four billion, eighty-nine million, nine hundred forty-nine thousand, four hundred eighty-eight".