65415004064 has 48 divisors (see below), whose sum is σ = 132295343040. Its totient is φ = 31820643840.

The previous prime is 65415004049. The next prime is 65415004079. The reversal of 65415004064 is 46040051456.

It is an interprime number because it is at equal distance from previous prime (65415004049) and next prime (65415004079).

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, 401567 + ... + 540449.

It is an arithmetic number, because the mean of its divisors is an integer number (2756152980).

Almost surely, 2^65415004064 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 65415004064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66147671520).

65415004064 is an abundant number, since it is smaller than the sum of its proper divisors (66880338976).

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

65415004064 is a wasteful number, since it uses less digits than its factorization.

65415004064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139293 (or 139285 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 65415004064 in words is "sixty-five billion, four hundred fifteen million, four thousand, sixty-four".