63681375078 has 96 divisors (see below), whose sum is σ = 142426791936. Its totient is φ = 20553384384.

The previous prime is 63681374989. The next prime is 63681375103. The reversal of 63681375078 is 87057318636.

63681375078 is a `hidden beast` number, since 63 + 68 + 13 + 7 + 507 + 8 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34931275 + ... + 34933097.

It is an arithmetic number, because the mean of its divisors is an integer number (1483612416).

Almost surely, 2^63681375078 is an apocalyptic number.

63681375078 is an abundant number, since it is smaller than the sum of its proper divisors (78745416858).

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

63681375078 is a wasteful number, since it uses less digits than its factorization.

63681375078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298 (or 2295 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 63681375078 in words is "sixty-three billion, six hundred eighty-one million, three hundred seventy-five thousand, seventy-eight".