63848698489 has 9 divisors (see below), whose sum is σ = 65454586959. Its totient is φ = 62281305840.

The previous prime is 63848698471. The next prime is 63848698499. The reversal of 63848698489 is 98489684836.

The square root of 63848698489 is 252683.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3076588089 + 60772110400 = 55467^2 + 246520^2 .

It is not a de Polignac number, because 63848698489 - 2⁹ = 63848697977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63848698429) 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 8 ways as a sum of consecutive naturals, for example, 10356922 + ... + 10363084.

Almost surely, 2^63848698489 is an apocalyptic number.

63848698489 is the 252683-rd square number.

63848698489 is the 126342-nd centered octagonal number.

It is an amenable number.

63848698489 is a deficient number, since it is larger than the sum of its proper divisors (1605888470).

63848698489 is an frugal number, since it uses more digits than its factorization.

63848698489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12408 (or 6204 counting only the distinct ones).

The product of its digits is 573308928, while the sum is 73.

The spelling of 63848698489 in words is "sixty-three billion, eight hundred forty-eight million, six hundred ninety-eight thousand, four hundred eighty-nine".