63645123429 has 12 divisors (see below), whose sum is σ = 91950300000. Its totient is φ = 42421564584.

The previous prime is 63645123401. The next prime is 63645123433. The reversal of 63645123429 is 92432154636.

63645123429 is a `hidden beast` number, since 6 + 364 + 51 + 234 + 2 + 9 = 666.

63645123429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63645123429 - 2⁷ = 63645123301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63645133429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 662319 + ... + 752300.

It is an arithmetic number, because the mean of its divisors is an integer number (7662525000).

Almost surely, 2^63645123429 is an apocalyptic number.

It is an amenable number.

63645123429 is a deficient number, since it is larger than the sum of its proper divisors (28305176571).

63645123429 is a wasteful number, since it uses less digits than its factorization.

63645123429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419624 (or 1419621 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The spelling of 63645123429 in words is "sixty-three billion, six hundred forty-five million, one hundred twenty-three thousand, four hundred twenty-nine".