63349207655728 has 80 divisors (see below), whose sum is σ = 131356284374016. Its totient is φ = 29528936236800.

The previous prime is 63349207655717. The next prime is 63349207655729. The reversal of 63349207655728 is 82755670294336.

It is a super-2 number, since 2×63349207655728² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63349207655729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7809900 + ... + 13700107.

Almost surely, 2^{63349207655728} is an apocalyptic number.

It is an amenable number.

63349207655728 is an abundant number, since it is smaller than the sum of its proper divisors (68007076718288).

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

63349207655728 is a wasteful number, since it uses less digits than its factorization.

63349207655728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21510242 (or 21510236 counting only the distinct ones).

The product of its (nonzero) digits is 457228800, while the sum is 67.

The spelling of 63349207655728 in words is "sixty-three trillion, three hundred forty-nine billion, two hundred seven million, six hundred fifty-five thousand, seven hundred twenty-eight".