63788857755 has 32 divisors (see below), whose sum is σ = 116653094400. Its totient is φ = 29157967872.

The previous prime is 63788857753. The next prime is 63788857763. The reversal of 63788857755 is 55775888736.

It is not a de Polignac number, because 63788857755 - 2¹ = 63788857753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63788857755.

It is not an unprimeable number, because it can be changed into a prime (63788857753) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1569531 + ... + 1609659.

It is an arithmetic number, because the mean of its divisors is an integer number (3645409200).

Almost surely, 2^63788857755 is an apocalyptic number.

63788857755 is a deficient number, since it is larger than the sum of its proper divisors (52864236645).

63788857755 is a wasteful number, since it uses less digits than its factorization.

63788857755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55283.

The product of its digits is 395136000, while the sum is 69.

The spelling of 63788857755 in words is "sixty-three billion, seven hundred eighty-eight million, eight hundred fifty-seven thousand, seven hundred fifty-five".