63643112739 has 12 divisors (see below), whose sum is σ = 91975092456. Its totient is φ = 42407440992.

The previous prime is 63643112723. The next prime is 63643112759. The reversal of 63643112739 is 93721134636.

63643112739 is a `hidden beast` number, since 6 + 3 + 64 + 311 + 273 + 9 = 666.

It is not a de Polignac number, because 63643112739 - 2⁴ = 63643112723 is a prime.

It is a super-4 number, since 4×63643112739⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a junction number, because it is equal to n+sod(n) for n = 63643112694 and 63643112703.

It is not an unprimeable number, because it can be changed into a prime (63643112759) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1756137 + ... + 1792010.

It is an arithmetic number, because the mean of its divisors is an integer number (7664591038).

Almost surely, 2^63643112739 is an apocalyptic number.

63643112739 is a deficient number, since it is larger than the sum of its proper divisors (28331979717).

63643112739 is a wasteful number, since it uses less digits than its factorization.

63643112739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3550146 (or 3550143 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The spelling of 63643112739 in words is "sixty-three billion, six hundred forty-three million, one hundred twelve thousand, seven hundred thirty-nine".