63755613408 has 48 divisors (see below), whose sum is σ = 168676300800. Its totient is φ = 21084529536.

The previous prime is 63755613407. The next prime is 63755613431. The reversal of 63755613408 is 80431655736.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63755613407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2602458 + ... + 2626841.

It is an arithmetic number, because the mean of its divisors is an integer number (3514089600).

Almost surely, 2^63755613408 is an apocalyptic number.

It is an amenable number.

63755613408 is an abundant number, since it is smaller than the sum of its proper divisors (104920687392).

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

63755613408 is a wasteful number, since it uses less digits than its factorization.

63755613408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5229439 (or 5229431 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 63755613408 in words is "sixty-three billion, seven hundred fifty-five million, six hundred thirteen thousand, four hundred eight".