63168537378 has 96 divisors (see below), whose sum is σ = 134723818944. Its totient is φ = 19741728384.

The previous prime is 63168537319. The next prime is 63168537391. The reversal of 63168537378 is 87373586136.

It is a super-2 number, since 2×63168537378² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 135264301 + ... + 135264767.

It is an arithmetic number, because the mean of its divisors is an integer number (1403373114).

Almost surely, 2^63168537378 is an apocalyptic number.

63168537378 is an abundant number, since it is smaller than the sum of its proper divisors (71555281566).

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

63168537378 is a wasteful number, since it uses less digits than its factorization.

63168537378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024 (or 1005 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 57.

The spelling of 63168537378 in words is "sixty-three billion, one hundred sixty-eight million, five hundred thirty-seven thousand, three hundred seventy-eight".