64811203672552 has 8 divisors (see below), whose sum is σ = 121521006886050. Its totient is φ = 32405601836272.

The previous prime is 64811203672511. The next prime is 64811203672561. The reversal of 64811203672552 is 25527630211846.

64811203672552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 33213021929476 + 31598181743076 = 5763074^2 + 5621226^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 64811203672552.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4050700229527 + ... + 4050700229542.

Almost surely, 2^{64811203672552} is an apocalyptic number.

It is an amenable number.

64811203672552 is a deficient number, since it is larger than the sum of its proper divisors (56709803213498).

64811203672552 is a wasteful number, since it uses less digits than its factorization.

64811203672552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8101400459075 (or 8101400459071 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 64811203672552 in words is "sixty-four trillion, eight hundred eleven billion, two hundred three million, six hundred seventy-two thousand, five hundred fifty-two".