64663523553356 has 36 divisors (see below), whose sum is σ = 140040530309232. Its totient is φ = 25581174151104.

The previous prime is 64663523553323. The next prime is 64663523553359. The reversal of 64663523553356 is 65335532536646.

It is not an unprimeable number, because it can be changed into a prime (64663523553359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6832573835 + ... + 6832583298.

It is an arithmetic number, because the mean of its divisors is an integer number (3890014730812).

Almost surely, 2^{64663523553356} is an apocalyptic number.

It is an amenable number.

64663523553356 is an abundant number, since it is smaller than the sum of its proper divisors (75377006755876).

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

64663523553356 is a wasteful number, since it uses less digits than its factorization.

64663523553356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13665157170 (or 13665157155 counting only the distinct ones).

The product of its digits is 524880000, while the sum is 62.

The spelling of 64663523553356 in words is "sixty-four trillion, six hundred sixty-three billion, five hundred twenty-three million, five hundred fifty-three thousand, three hundred fifty-six".