97102988478677 has 2 divisors, whose sum is σ = 97102988478678. Its totient is φ = 97102988478676.

The previous prime is 97102988478619. The next prime is 97102988478707. The reversal of 97102988478677 is 77687488920179.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96178700441476 + 924288037201 = 9807074^2 + 961399^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97102988478677 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97102988478595 and 97102988478604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97102988478077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48551494239338 + 48551494239339.

It is an arithmetic number, because the mean of its divisors is an integer number (48551494239339).

Almost surely, 2^{97102988478677} is an apocalyptic number.

It is an amenable number.

97102988478677 is a deficient number, since it is larger than the sum of its proper divisors (1).

97102988478677 is an equidigital number, since it uses as much as digits as its factorization.

97102988478677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4779565056, while the sum is 83.

The spelling of 97102988478677 in words is "ninety-seven trillion, one hundred two billion, nine hundred eighty-eight million, four hundred seventy-eight thousand, six hundred seventy-seven".