78800241378811 has 2 divisors, whose sum is σ = 78800241378812. Its totient is φ = 78800241378810.

The previous prime is 78800241378731. The next prime is 78800241378827. The reversal of 78800241378811 is 11887314200887.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78800241378811 - 2¹³ = 78800241370619 is a prime.

It is not a weakly prime, because it can be changed into another prime (78800241348811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39400120689405 + 39400120689406.

It is an arithmetic number, because the mean of its divisors is an integer number (39400120689406).

Almost surely, 2^{78800241378811} is an apocalyptic number.

78800241378811 is a deficient number, since it is larger than the sum of its proper divisors (1).

78800241378811 is an equidigital number, since it uses as much as digits as its factorization.

78800241378811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4816896, while the sum is 58.

The spelling of 78800241378811 in words is "seventy-eight trillion, eight hundred billion, two hundred forty-one million, three hundred seventy-eight thousand, eight hundred eleven".