64480820516 has 24 divisors (see below), whose sum is σ = 128995344576. Its totient is φ = 27627415200.

The previous prime is 64480820513. The next prime is 64480820533. The reversal of 64480820516 is 61502808446.

It is a happy number.

64480820516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (64480820513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191171 + ... + 406826.

It is an arithmetic number, because the mean of its divisors is an integer number (5374806024).

Almost surely, 2^64480820516 is an apocalyptic number.

It is an amenable number.

64480820516 is an abundant number, since it is smaller than the sum of its proper divisors (64514524060).

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

64480820516 is a wasteful number, since it uses less digits than its factorization.

64480820516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601859 (or 601857 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 44.

The spelling of 64480820516 in words is "sixty-four billion, four hundred eighty million, eight hundred twenty thousand, five hundred sixteen".