77871465311 has 2 divisors, whose sum is σ = 77871465312. Its totient is φ = 77871465310.

The previous prime is 77871465283. The next prime is 77871465323. The reversal of 77871465311 is 11356417877.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77871465311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77871465311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77871465011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38935732655 + 38935732656.

It is an arithmetic number, because the mean of its divisors is an integer number (38935732656).

Almost surely, 2^77871465311 is an apocalyptic number.

77871465311 is a deficient number, since it is larger than the sum of its proper divisors (1).

77871465311 is an equidigital number, since it uses as much as digits as its factorization.

77871465311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 987840, while the sum is 50.

The spelling of 77871465311 in words is "seventy-seven billion, eight hundred seventy-one million, four hundred sixty-five thousand, three hundred eleven".