78998285297 has 2 divisors, whose sum is σ = 78998285298. Its totient is φ = 78998285296.

The previous prime is 78998285293. The next prime is 78998285323. The reversal of 78998285297 is 79258289987.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64345424896 + 14652860401 = 253664^2 + 121049^2 .

It is a cyclic number.

It is not a de Polignac number, because 78998285297 - 2² = 78998285293 is a prime.

It is not a weakly prime, because it can be changed into another prime (78998285293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39499142648 + 39499142649.

It is an arithmetic number, because the mean of its divisors is an integer number (39499142649).

Almost surely, 2^78998285297 is an apocalyptic number.

It is an amenable number.

78998285297 is a deficient number, since it is larger than the sum of its proper divisors (1).

78998285297 is an equidigital number, since it uses as much as digits as its factorization.

78998285297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 365783040, while the sum is 74.

The spelling of 78998285297 in words is "seventy-eight billion, nine hundred ninety-eight million, two hundred eighty-five thousand, two hundred ninety-seven".