63421478145 has 64 divisors (see below), whose sum is σ = 119532672000. Its totient is φ = 31794812928.

The previous prime is 63421478137. The next prime is 63421478177. The reversal of 63421478145 is 54187412436.

63421478145 is a `hidden beast` number, since 6 + 34 + 2 + 1 + 478 + 145 = 666.

It is not a de Polignac number, because 63421478145 - 2³ = 63421478137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 63421478145.

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 63 ways as a sum of consecutive naturals, for example, 1839576 + ... + 1873734.

It is an arithmetic number, because the mean of its divisors is an integer number (1867698000).

Almost surely, 2^63421478145 is an apocalyptic number.

It is an amenable number.

63421478145 is a deficient number, since it is larger than the sum of its proper divisors (56111193855).

63421478145 is a wasteful number, since it uses less digits than its factorization.

63421478145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34999 (or 34993 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The spelling of 63421478145 in words is "sixty-three billion, four hundred twenty-one million, four hundred seventy-eight thousand, one hundred forty-five".