97877515061 has 2 divisors, whose sum is σ = 97877515062. Its totient is φ = 97877515060.

The previous prime is 97877515049. The next prime is 97877515063. The reversal of 97877515061 is 16051577879.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97418270161 + 459244900 = 312119^2 + 21430^2 .

It is a cyclic number.

It is not a de Polignac number, because 97877515061 - 2¹⁸ = 97877252917 is a prime.

Together with 97877515063, 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 = 97877514988 and 97877515006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97877515063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48938757530 + 48938757531.

It is an arithmetic number, because the mean of its divisors is an integer number (48938757531).

Almost surely, 2^97877515061 is an apocalyptic number.

It is an amenable number.

97877515061 is a deficient number, since it is larger than the sum of its proper divisors (1).

97877515061 is an equidigital number, since it uses as much as digits as its factorization.

97877515061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3704400, while the sum is 56.

The spelling of 97877515061 in words is "ninety-seven billion, eight hundred seventy-seven million, five hundred fifteen thousand, sixty-one".