64387507014540 has 384 divisors, whose sum is σ = 223610792832000. Its totient is φ = 15285639278592.

The previous prime is 64387507014529. The next prime is 64387507014553. The reversal of 64387507014540 is 4541070578346.

64387507014540 is a `hidden beast` number, since 6 + 4 + 3 + 87 + 5 + 0 + 7 + 0 + 14 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 111865006 + ... + 112439114.

It is an arithmetic number, because the mean of its divisors is an integer number (582319773000).

Almost surely, 2^{64387507014540} is an apocalyptic number.

64387507014540 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 64387507014540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111805396416000).

64387507014540 is an abundant number, since it is smaller than the sum of its proper divisors (159223285817460).

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

64387507014540 is a wasteful number, since it uses less digits than its factorization.

64387507014540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574806 (or 574798 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 54.

The spelling of 64387507014540 in words is "sixty-four trillion, three hundred eighty-seven billion, five hundred seven million, fourteen thousand, five hundred forty".