68477391911 has 2 divisors, whose sum is σ = 68477391912. Its totient is φ = 68477391910.

The previous prime is 68477391901. The next prime is 68477391971. The reversal of 68477391911 is 11919377486.

68477391911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68477391911 - 2⁶ = 68477391847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68477391901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34238695955 + 34238695956.

It is an arithmetic number, because the mean of its divisors is an integer number (34238695956).

Almost surely, 2^68477391911 is an apocalyptic number.

68477391911 is a deficient number, since it is larger than the sum of its proper divisors (1).

68477391911 is an equidigital number, since it uses as much as digits as its factorization.

68477391911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 56.

The spelling of 68477391911 in words is "sixty-eight billion, four hundred seventy-seven million, three hundred ninety-one thousand, nine hundred eleven".