77765450459 has 2 divisors, whose sum is σ = 77765450460. Its totient is φ = 77765450458.

The previous prime is 77765450431. The next prime is 77765450467. The reversal of 77765450459 is 95405456777.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77765450459 - 2¹⁶ = 77765384923 is a prime.

It is a super-3 number, since 3×77765450459³ (a number of 34 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 77765450398 and 77765450407.

It is not a weakly prime, because it can be changed into another prime (77765450429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38882725229 + 38882725230.

It is an arithmetic number, because the mean of its divisors is an integer number (38882725230).

Almost surely, 2^77765450459 is an apocalyptic number.

77765450459 is a deficient number, since it is larger than the sum of its proper divisors (1).

77765450459 is an equidigital number, since it uses as much as digits as its factorization.

77765450459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37044000, while the sum is 59.

The spelling of 77765450459 in words is "seventy-seven billion, seven hundred sixty-five million, four hundred fifty thousand, four hundred fifty-nine".