77763701545919 has 2 divisors, whose sum is σ = 77763701545920. Its totient is φ = 77763701545918.

The previous prime is 77763701545813. The next prime is 77763701545921. The reversal of 77763701545919 is 91954510736777.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77763701545919 is a prime.

It is a super-2 number, since 2×77763701545919² (a number of 29 digits) contains 22 as substring.

Together with 77763701545921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77763701545219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38881850772959 + 38881850772960.

It is an arithmetic number, because the mean of its divisors is an integer number (38881850772960).

Almost surely, 2^{77763701545919} is an apocalyptic number.

77763701545919 is a deficient number, since it is larger than the sum of its proper divisors (1).

77763701545919 is an equidigital number, since it uses as much as digits as its factorization.

77763701545919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 350065800, while the sum is 71.

The spelling of 77763701545919 in words is "seventy-seven trillion, seven hundred sixty-three billion, seven hundred one million, five hundred forty-five thousand, nine hundred nineteen".