63788947641 has 6 divisors (see below), whose sum is σ = 92139591050. Its totient is φ = 42525965088.

The previous prime is 63788947619. The next prime is 63788947643. The reversal of 63788947641 is 14674988736.

It can be written as a sum of positive squares in only one way, i.e., 43857155241 + 19931792400 = 209421^2 + 141180^2 .

It is not a de Polignac number, because 63788947641 - 2¹³ = 63788939449 is a prime.

It is a super-2 number, since 2×63788947641² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63788947643) 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 5 ways as a sum of consecutive naturals, for example, 3543830416 + ... + 3543830433.

Almost surely, 2^63788947641 is an apocalyptic number.

It is an amenable number.

63788947641 is a deficient number, since it is larger than the sum of its proper divisors (28350643409).

63788947641 is a wasteful number, since it uses less digits than its factorization.

63788947641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7087660855 (or 7087660852 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 63.

The spelling of 63788947641 in words is "sixty-three billion, seven hundred eighty-eight million, nine hundred forty-seven thousand, six hundred forty-one".