71777077716 has 24 divisors (see below), whose sum is σ = 169599848320. Its totient is φ = 23622835392.

The previous prime is 71777077711. The next prime is 71777077721. The reversal of 71777077716 is 61777077717.

It is an interprime number because it is at equal distance from previous prime (71777077711) and next prime (71777077721).

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71777077711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37856161 + ... + 37858056.

Almost surely, 2^71777077716 is an apocalyptic number.

It is an amenable number.

71777077716 is an abundant number, since it is smaller than the sum of its proper divisors (97822770604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71777077716 is a wasteful number, since it uses less digits than its factorization.

71777077716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75714303 (or 75714301 counting only the distinct ones).

The product of its (nonzero) digits is 4941258, while the sum is 57.

Subtracting from 71777077716 its reverse (61777077717), we obtain a palindrome (9999999999).

The spelling of 71777077716 in words is "seventy-one billion, seven hundred seventy-seven million, seventy-seven thousand, seven hundred sixteen".