63645373140 has 48 divisors (see below), whose sum is σ = 183023457792. Its totient is φ = 16513393536.

The previous prime is 63645373117. The next prime is 63645373213. The reversal of 63645373140 is 4137354636.

It is a junction number, because it is equal to n+sod(n) for n = 63645373092 and 63645373101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14332324 + ... + 14336763.

It is an arithmetic number, because the mean of its divisors is an integer number (3812988704).

Almost surely, 2^63645373140 is an apocalyptic number.

63645373140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63645373140 is an abundant number, since it is smaller than the sum of its proper divisors (119378084652).

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

63645373140 is a wasteful number, since it uses less digits than its factorization.

63645373140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28669136 (or 28669134 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 42.

The spelling of 63645373140 in words is "sixty-three billion, six hundred forty-five million, three hundred seventy-three thousand, one hundred forty".