64881003652 has 24 divisors (see below), whose sum is σ = 119447798400. Its totient is φ = 30790981536.

The previous prime is 64881003601. The next prime is 64881003653. The reversal of 64881003652 is 25630018846.

It is a junction number, because it is equal to n+sod(n) for n = 64881003599 and 64881003608.

It is not an unprimeable number, because it can be changed into a prime (64881003653) 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 7 ways as a sum of consecutive naturals, for example, 4733148 + ... + 4746835.

It is an arithmetic number, because the mean of its divisors is an integer number (4976991600).

Almost surely, 2^64881003652 is an apocalyptic number.

It is an amenable number.

64881003652 is a deficient number, since it is larger than the sum of its proper divisors (54566794748).

64881003652 is a wasteful number, since it uses less digits than its factorization.

64881003652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9480075 (or 9480073 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 64881003652 in words is "sixty-four billion, eight hundred eighty-one million, three thousand, six hundred fifty-two".