63645123428 has 12 divisors (see below), whose sum is σ = 112720881840. Its totient is φ = 31439157192.

The previous prime is 63645123401. The next prime is 63645123433. The reversal of 63645123428 is 82432154636.

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 3 ways as a sum of consecutive naturals, for example, 95850758 + ... + 95851421.

It is an arithmetic number, because the mean of its divisors is an integer number (9393406820).

Almost surely, 2^63645123428 is an apocalyptic number.

It is an amenable number.

63645123428 is a deficient number, since it is larger than the sum of its proper divisors (49075758412).

63645123428 is a wasteful number, since it uses less digits than its factorization.

63645123428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191702266 (or 191702264 counting only the distinct ones).

The product of its digits is 829440, while the sum is 44.

The spelling of 63645123428 in words is "sixty-three billion, six hundred forty-five million, one hundred twenty-three thousand, four hundred twenty-eight".