77707705007 has 8 divisors (see below), whose sum is σ = 82378978992. Its totient is φ = 73047568000.

The previous prime is 77707704979. The next prime is 77707705037. The reversal of 77707705007 is 70050770777.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77707705007 - 2¹⁸ = 77707442863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77707705037) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2769869 + ... + 2797782.

It is an arithmetic number, because the mean of its divisors is an integer number (10297372374).

Almost surely, 2^77707705007 is an apocalyptic number.

77707705007 is a deficient number, since it is larger than the sum of its proper divisors (4671273985).

77707705007 is a wasteful number, since it uses less digits than its factorization.

77707705007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5568489.

The product of its (nonzero) digits is 588245, while the sum is 47.

It can be divided in two parts, 7770770 and 5007, that added together give a palindrome (7775777).

The spelling of 77707705007 in words is "seventy-seven billion, seven hundred seven million, seven hundred five thousand, seven".