63273561651 has 12 divisors (see below), whose sum is σ = 91448960200. Its totient is φ = 42157536480.

The previous prime is 63273561647. The next prime is 63273561661. The reversal of 63273561651 is 15616537236.

63273561651 is a `hidden beast` number, since 6 + 3 + 27 + 3 + 5 + 616 + 5 + 1 = 666.

It is not a de Polignac number, because 63273561651 - 2² = 63273561647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63273561597 and 63273561606.

It is not an unprimeable number, because it can be changed into a prime (63273561661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2053690 + ... + 2084271.

Almost surely, 2^63273561651 is an apocalyptic number.

63273561651 is a deficient number, since it is larger than the sum of its proper divisors (28175398549).

63273561651 is a wasteful number, since it uses less digits than its factorization.

63273561651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139666 (or 4139663 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The spelling of 63273561651 in words is "sixty-three billion, two hundred seventy-three million, five hundred sixty-one thousand, six hundred fifty-one".