77705532065716 has 48 divisors (see below), whose sum is σ = 147766684764160. Its totient is φ = 35618739262560.

The previous prime is 77705532065687. The next prime is 77705532065743. The reversal of 77705532065716 is 61756023550777.

It is a super-2 number, since 2×77705532065716² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46551931 + ... + 48192253.

Almost surely, 2^{77705532065716} is an apocalyptic number.

77705532065716 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

77705532065716 is a deficient number, since it is larger than the sum of its proper divisors (70061152698444).

77705532065716 is a wasteful number, since it uses less digits than its factorization.

77705532065716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660484 (or 1660482 counting only the distinct ones).

The product of its (nonzero) digits is 64827000, while the sum is 61.

The spelling of 77705532065716 in words is "seventy-seven trillion, seven hundred five billion, five hundred thirty-two million, sixty-five thousand, seven hundred sixteen".