98640816968 has 8 divisors (see below), whose sum is σ = 184951531830. Its totient is φ = 49320408480.

The previous prime is 98640816961. The next prime is 98640816971. The reversal of 98640816968 is 86961804689.

It can be written as a sum of positive squares in only one way, i.e., 62281191844 + 36359625124 = 249562^2 + 190682^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×98640816968² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (98640816961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6165051053 + ... + 6165051068.

Almost surely, 2^98640816968 is an apocalyptic number.

It is an amenable number.

98640816968 is a deficient number, since it is larger than the sum of its proper divisors (86310714862).

98640816968 is a wasteful number, since it uses less digits than its factorization.

98640816968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12330102127 (or 12330102123 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 65.

The spelling of 98640816968 in words is "ninety-eight billion, six hundred forty million, eight hundred sixteen thousand, nine hundred sixty-eight".