77376619069 has 2 divisors, whose sum is σ = 77376619070. Its totient is φ = 77376619068.

The previous prime is 77376618983. The next prime is 77376619079. The reversal of 77376619069 is 96091667377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62219315844 + 15157303225 = 249438^2 + 123115^2 .

It is a cyclic number.

It is not a de Polignac number, because 77376619069 - 2²⁵ = 77343064637 is a prime.

It is a super-2 number, since 2×77376619069² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77376618998 and 77376619016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77376619079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38688309534 + 38688309535.

It is an arithmetic number, because the mean of its divisors is an integer number (38688309535).

Almost surely, 2^77376619069 is an apocalyptic number.

It is an amenable number.

77376619069 is a deficient number, since it is larger than the sum of its proper divisors (1).

77376619069 is an equidigital number, since it uses as much as digits as its factorization.

77376619069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18003384, while the sum is 61.

The spelling of 77376619069 in words is "seventy-seven billion, three hundred seventy-six million, six hundred nineteen thousand, sixty-nine".