7700777770077 has 48 divisors (see below), whose sum is σ = 13057331078272. Its totient is φ = 4281068246400.

The previous prime is 7700777770039. The next prime is 7700777770121.

7700777770077 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7700777770077 - 2¹⁰ = 7700777769053 is a prime.

It is a super-2 number, since 2×7700777770077² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 7700777769996 and 7700777770023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7700777774077) 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 47 ways as a sum of consecutive naturals, for example, 22912398 + ... + 23246064.

Almost surely, 2^{7700777770077} is an apocalyptic number.

It is an amenable number.

7700777770077 is a deficient number, since it is larger than the sum of its proper divisors (5356553308195).

7700777770077 is a wasteful number, since it uses less digits than its factorization.

7700777770077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343618 (or 343615 counting only the distinct ones).

The product of its (nonzero) digits is 40353607, while the sum is 63.

It can be divided in two parts, 7700 and 777770077, that added together give a palindrome (777777777).

The spelling of 7700777770077 in words is "seven trillion, seven hundred billion, seven hundred seventy-seven million, seven hundred seventy thousand, seventy-seven".