77723036361469 has 2 divisors, whose sum is σ = 77723036361470. Its totient is φ = 77723036361468.

The previous prime is 77723036361457. The next prime is 77723036361541. The reversal of 77723036361469 is 96416363032777.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76956089541444 + 766946820025 = 8772462^2 + 875755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77723036361469 is a prime.

It is a super-2 number, since 2×77723036361469² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77723036361469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77723036361419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38861518180734 + 38861518180735.

It is an arithmetic number, because the mean of its divisors is an integer number (38861518180735).

Almost surely, 2^{77723036361469} is an apocalyptic number.

It is an amenable number.

77723036361469 is a deficient number, since it is larger than the sum of its proper divisors (1).

77723036361469 is an equidigital number, since it uses as much as digits as its factorization.

77723036361469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144027072, while the sum is 64.

The spelling of 77723036361469 in words is "seventy-seven trillion, seven hundred twenty-three billion, thirty-six million, three hundred sixty-one thousand, four hundred sixty-nine".