78758520211 has 8 divisors (see below), whose sum is σ = 91846671200. Its totient is φ = 67507302744.

The previous prime is 78758520173. The next prime is 78758520223. The reversal of 78758520211 is 11202585787.

It is not a de Polignac number, because 78758520211 - 2⁷ = 78758520083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78758520241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114807996 + ... + 114808681.

It is an arithmetic number, because the mean of its divisors is an integer number (11480833900).

Almost surely, 2^78758520211 is an apocalyptic number.

78758520211 is a deficient number, since it is larger than the sum of its proper divisors (13088150989).

78758520211 is an equidigital number, since it uses as much as digits as its factorization.

78758520211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229616698 (or 229616684 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 46.

The spelling of 78758520211 in words is "seventy-eight billion, seven hundred fifty-eight million, five hundred twenty thousand, two hundred eleven".