78882037464641 has 2 divisors, whose sum is σ = 78882037464642. Its totient is φ = 78882037464640.

The previous prime is 78882037464599. The next prime is 78882037464647. The reversal of 78882037464641 is 14646473028887.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50238893443600 + 28643144021041 = 7087940^2 + 5351929^2 .

It is a cyclic number.

It is not a de Polignac number, because 78882037464641 - 2³⁰ = 78880963722817 is a prime.

It is not a weakly prime, because it can be changed into another prime (78882037464647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39441018732320 + 39441018732321.

It is an arithmetic number, because the mean of its divisors is an integer number (39441018732321).

Almost surely, 2^{78882037464641} is an apocalyptic number.

It is an amenable number.

78882037464641 is a deficient number, since it is larger than the sum of its proper divisors (1).

78882037464641 is an equidigital number, since it uses as much as digits as its factorization.

78882037464641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 346816512, while the sum is 68.

The spelling of 78882037464641 in words is "seventy-eight trillion, eight hundred eighty-two billion, thirty-seven million, four hundred sixty-four thousand, six hundred forty-one".