64519014720 has 224 divisors, whose sum is σ = 217541904768. Its totient is φ = 16144924672.

The previous prime is 64519014667. The next prime is 64519014727. The reversal of 64519014720 is 2741091546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64519014727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5657344 + ... + 5668736.

Almost surely, 2^64519014720 is an apocalyptic number.

64519014720 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 64519014720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108770952384).

64519014720 is an abundant number, since it is smaller than the sum of its proper divisors (153022890048).

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

64519014720 is a wasteful number, since it uses less digits than its factorization.

64519014720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11777 (or 11767 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

It can be divided in two parts, 6451901 and 4720, that added together give a triangular number (6456621 = T₃₅₉₃).

The spelling of 64519014720 in words is "sixty-four billion, five hundred nineteen million, fourteen thousand, seven hundred twenty".