98847378977 has 2 divisors, whose sum is σ = 98847378978. Its totient is φ = 98847378976.

The previous prime is 98847378953. The next prime is 98847378979. The reversal of 98847378977 is 77987374889.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86650164496 + 12197214481 = 294364^2 + 110441^2 .

It is a cyclic number.

It is not a de Polignac number, because 98847378977 - 2¹⁶ = 98847313441 is a prime.

Together with 98847378979, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 98847378898 and 98847378907.

It is not a weakly prime, because it can be changed into another prime (98847378979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49423689488 + 49423689489.

It is an arithmetic number, because the mean of its divisors is an integer number (49423689489).

Almost surely, 2^98847378977 is an apocalyptic number.

It is an amenable number.

98847378977 is a deficient number, since it is larger than the sum of its proper divisors (1).

98847378977 is an equidigital number, since it uses as much as digits as its factorization.

98847378977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1194891264, while the sum is 77.

The spelling of 98847378977 in words is "ninety-eight billion, eight hundred forty-seven million, three hundred seventy-eight thousand, nine hundred seventy-seven".