63605855215 has 64 divisors (see below), whose sum is σ = 94356347904. Its totient is φ = 40172894208.

The previous prime is 63605855197. The next prime is 63605855221. The reversal of 63605855215 is 51255850636.

It is not a de Polignac number, because 63605855215 - 2¹¹ = 63605853167 is a prime.

It is a congruent number.

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 in 63 ways as a sum of consecutive naturals, for example, 5278177 + ... + 5290213.

It is an arithmetic number, because the mean of its divisors is an integer number (1474317936).

Almost surely, 2^63605855215 is an apocalyptic number.

63605855215 is a deficient number, since it is larger than the sum of its proper divisors (30750492689).

63605855215 is a wasteful number, since it uses less digits than its factorization.

63605855215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12256.

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 63605855215 in words is "sixty-three billion, six hundred five million, eight hundred fifty-five thousand, two hundred fifteen".