77707707007 has 16 divisors (see below), whose sum is σ = 90985934592. Its totient is φ = 64974156480.

The previous prime is 77707706983. The next prime is 77707707067. The reversal of 77707707007 is 70070770777.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77707707007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77707707067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4687908 + ... + 4704454.

It is an arithmetic number, because the mean of its divisors is an integer number (5686620912).

Almost surely, 2^77707707007 is an apocalyptic number.

77707707007 is a deficient number, since it is larger than the sum of its proper divisors (13278227585).

77707707007 is a wasteful number, since it uses less digits than its factorization.

77707707007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32958.

The product of its (nonzero) digits is 823543, while the sum is 49.

It can be divided in two parts, 7770770 and 7007, that added together give a palindrome (7777777).

The spelling of 77707707007 in words is "seventy-seven billion, seven hundred seven million, seven hundred seven thousand, seven".