78877825844011 has 2 divisors, whose sum is σ = 78877825844012. Its totient is φ = 78877825844010.

The previous prime is 78877825843997. The next prime is 78877825844021. The reversal of 78877825844011 is 11044852877887.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78877825844011 - 2¹³ = 78877825835819 is a prime.

It is a super-2 number, since 2×78877825844011² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78877825844021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39438912922005 + 39438912922006.

It is an arithmetic number, because the mean of its divisors is an integer number (39438912922006).

Almost surely, 2^{78877825844011} is an apocalyptic number.

78877825844011 is a deficient number, since it is larger than the sum of its proper divisors (1).

78877825844011 is an equidigital number, since it uses as much as digits as its factorization.

78877825844011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224788480, while the sum is 70.

The spelling of 78877825844011 in words is "seventy-eight trillion, eight hundred seventy-seven billion, eight hundred twenty-five million, eight hundred forty-four thousand, eleven".