77700685260487 has 2 divisors, whose sum is σ = 77700685260488. Its totient is φ = 77700685260486.

The previous prime is 77700685260467. The next prime is 77700685260553. The reversal of 77700685260487 is 78406258600777.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77700685260487 is a prime.

It is a super-3 number, since 3×77700685260487³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77700685260467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38850342630243 + 38850342630244.

It is an arithmetic number, because the mean of its divisors is an integer number (38850342630244).

Almost surely, 2^{77700685260487} is an apocalyptic number.

77700685260487 is a deficient number, since it is larger than the sum of its proper divisors (1).

77700685260487 is an equidigital number, since it uses as much as digits as its factorization.

77700685260487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221276160, while the sum is 67.

The spelling of 77700685260487 in words is "seventy-seven trillion, seven hundred billion, six hundred eighty-five million, two hundred sixty thousand, four hundred eighty-seven".