63645065045 has 4 divisors (see below), whose sum is σ = 76374078060. Its totient is φ = 50916052032.

The previous prime is 63645065009. The next prime is 63645065051. The reversal of 63645065045 is 54056054636.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28119600721 + 35525464324 = 167689^2 + 188482^2 .

It is a cyclic number.

It is not a de Polignac number, because 63645065045 - 2²⁶ = 63577956181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63645064987 and 63645065005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6364506500 + ... + 6364506509.

It is an arithmetic number, because the mean of its divisors is an integer number (19093519515).

Almost surely, 2^63645065045 is an apocalyptic number.

It is an amenable number.

63645065045 is a deficient number, since it is larger than the sum of its proper divisors (12729013015).

63645065045 is a wasteful number, since it uses less digits than its factorization.

63645065045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12729013014.

The product of its (nonzero) digits is 1296000, while the sum is 44.

The spelling of 63645065045 in words is "sixty-three billion, six hundred forty-five million, sixty-five thousand, forty-five".