98510187681 has 6 divisors (see below), whose sum is σ = 142292493330. Its totient is φ = 65673458448.

The previous prime is 98510187647. The next prime is 98510187701. The reversal of 98510187681 is 18678101589.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 82603933281 + 15906254400 = 287409^2 + 126120^2 .

It is not a de Polignac number, because 98510187681 - 2¹⁹ = 98509663393 is a prime.

It is a super-2 number, since 2×98510187681² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (98510182681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5472788196 + ... + 5472788213.

It is an arithmetic number, because the mean of its divisors is an integer number (23715415555).

Almost surely, 2^98510187681 is an apocalyptic number.

It is an amenable number.

98510187681 is a deficient number, since it is larger than the sum of its proper divisors (43782305649).

98510187681 is a wasteful number, since it uses less digits than its factorization.

98510187681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10945576415 (or 10945576412 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 54.

The spelling of 98510187681 in words is "ninety-eight billion, five hundred ten million, one hundred eighty-seven thousand, six hundred eighty-one".