98661528677 has 2 divisors, whose sum is σ = 98661528678. Its totient is φ = 98661528676.

The previous prime is 98661528673. The next prime is 98661528689. The reversal of 98661528677 is 77682516689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96687414916 + 1974113761 = 310946^2 + 44431^2 .

It is a cyclic number.

It is not a de Polignac number, because 98661528677 - 2² = 98661528673 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98661528671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49330764338 + 49330764339.

It is an arithmetic number, because the mean of its divisors is an integer number (49330764339).

Almost surely, 2^98661528677 is an apocalyptic number.

It is an amenable number.

98661528677 is a deficient number, since it is larger than the sum of its proper divisors (1).

98661528677 is an equidigital number, since it uses as much as digits as its factorization.

98661528677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60963840, while the sum is 65.

The spelling of 98661528677 in words is "ninety-eight billion, six hundred sixty-one million, five hundred twenty-eight thousand, six hundred seventy-seven".