78785060897 has 2 divisors, whose sum is σ = 78785060898. Its totient is φ = 78785060896.

The previous prime is 78785060863. The next prime is 78785060903. The reversal of 78785060897 is 79806058787.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69211612561 + 9573448336 = 263081^2 + 97844^2 .

It is a cyclic number.

It is not a de Polignac number, because 78785060897 - 2²⁸ = 78516625441 is a prime.

It is not a weakly prime, because it can be changed into another prime (78785060297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39392530448 + 39392530449.

It is an arithmetic number, because the mean of its divisors is an integer number (39392530449).

Almost surely, 2^78785060897 is an apocalyptic number.

It is an amenable number.

78785060897 is a deficient number, since it is larger than the sum of its proper divisors (1).

78785060897 is an equidigital number, since it uses as much as digits as its factorization.

78785060897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47416320, while the sum is 65.

The spelling of 78785060897 in words is "seventy-eight billion, seven hundred eighty-five million, sixty thousand, eight hundred ninety-seven".