64485220524 has 48 divisors (see below), whose sum is σ = 155390678016. Its totient is φ = 20792116800.

The previous prime is 64485220507. The next prime is 64485220529. The reversal of 64485220524 is 42502258446.

It is not an unprimeable number, because it can be changed into a prime (64485220529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 793419 + ... + 870909.

It is an arithmetic number, because the mean of its divisors is an integer number (3237305792).

Almost surely, 2^64485220524 is an apocalyptic number.

It is an amenable number.

64485220524 is an abundant number, since it is smaller than the sum of its proper divisors (90905457492).

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

64485220524 is a wasteful number, since it uses less digits than its factorization.

64485220524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79766 (or 79764 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 42.

The spelling of 64485220524 in words is "sixty-four billion, four hundred eighty-five million, two hundred twenty thousand, five hundred twenty-four".