77700685260553 has 2 divisors, whose sum is σ = 77700685260554. Its totient is φ = 77700685260552.

The previous prime is 77700685260487. The next prime is 77700685260599. The reversal of 77700685260553 is 35506258600777.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77629967559369 + 70717701184 = 8810787^2 + 265928^2 .

It is a cyclic number.

It is not a de Polignac number, because 77700685260553 - 2⁴¹ = 75501662005001 is a prime.

It is a super-3 number, since 3×77700685260553³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77700685260491 and 77700685260500.

It is not a weakly prime, because it can be changed into another prime (77700685360553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38850342630276 + 38850342630277.

It is an arithmetic number, because the mean of its divisors is an integer number (38850342630277).

Almost surely, 2^{77700685260553} is an apocalyptic number.

It is an amenable number.

77700685260553 is a deficient number, since it is larger than the sum of its proper divisors (1).

77700685260553 is an equidigital number, since it uses as much as digits as its factorization.

77700685260553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 74088000, while the sum is 61.

The spelling of 77700685260553 in words is "seventy-seven trillion, seven hundred billion, six hundred eighty-five million, two hundred sixty thousand, five hundred fifty-three".