63975492869 has 2 divisors, whose sum is σ = 63975492870. Its totient is φ = 63975492868.

The previous prime is 63975492851. The next prime is 63975492881. The reversal of 63975492869 is 96829457936.

63975492869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39090430369 + 24885062500 = 197713^2 + 157750^2 .

It is a cyclic number.

It is not a de Polignac number, because 63975492869 - 2¹⁶ = 63975427333 is a prime.

It is a super-2 number, since 2×63975492869² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63975492799 and 63975492808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63975492829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31987746434 + 31987746435.

It is an arithmetic number, because the mean of its divisors is an integer number (31987746435).

Almost surely, 2^63975492869 is an apocalyptic number.

It is an amenable number.

63975492869 is a deficient number, since it is larger than the sum of its proper divisors (1).

63975492869 is an equidigital number, since it uses as much as digits as its factorization.

63975492869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176359680, while the sum is 68.

The spelling of 63975492869 in words is "sixty-three billion, nine hundred seventy-five million, four hundred ninety-two thousand, eight hundred sixty-nine".